Allow common redis and leveldb connections (#12385)

* Allow common redis and leveldb connections

Prevents multiple reopening of redis and leveldb connections to the same
place by sharing connections.

Further allows for more configurable redis connection type using the
redisURI and a leveldbURI scheme.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add unit-test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @lunny

Signed-off-by: Andrew Thornton <art27@cantab.net>

* add test

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Update modules/cache/cache_redis.go

* Update modules/queue/queue_disk.go

* Update modules/cache/cache_redis.go

* Update modules/cache/cache_redis.go

* Update modules/queue/unique_queue_disk.go

* Update modules/queue/queue_disk.go

* Update modules/queue/unique_queue_disk.go

* Update modules/session/redis.go

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
Co-authored-by: Lauris BH <lauris@nix.lv>

55 files changed, 4182 insertions, 3359 deletions

diff --git a/vendor/gitea.com/macaron/cache/redis/redis.go b/vendor/gitea.com/macaron/cache/redis/redis.go
deleted file mode 100644
index 892ee28bdc..0000000000
--- a/vendor/gitea.com/macaron/cache/redis/redis.go
+++ /dev/null
@@ -1,178 +0,0 @@
-// Copyright 2013 Beego Authors
-// Copyright 2014 The Macaron Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License"): you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-// License for the specific language governing permissions and limitations
-// under the License.
-
-package cache
-
-import (
-	"fmt"
-	"strings"
-	"time"
-
-	"github.com/go-redis/redis"
-	"github.com/unknwon/com"
-	"gopkg.in/ini.v1"
-
-	"gitea.com/macaron/cache"
-)
-
-// RedisCacher represents a redis cache adapter implementation.
-type RedisCacher struct {
-	c          *redis.Client
-	prefix     string
-	hsetName   string
-	occupyMode bool
-}
-
-// Put puts value into cache with key and expire time.
-// If expired is 0, it lives forever.
-func (c *RedisCacher) Put(key string, val interface{}, expire int64) error {
-	key = c.prefix + key
-	if expire == 0 {
-		if err := c.c.Set(key, com.ToStr(val), 0).Err(); err != nil {
-			return err
-		}
-	} else {
-		dur, err := time.ParseDuration(com.ToStr(expire) + "s")
-		if err != nil {
-			return err
-		}
-		if err = c.c.Set(key, com.ToStr(val), dur).Err(); err != nil {
-			return err
-		}
-	}
-
-	if c.occupyMode {
-		return nil
-	}
-	return c.c.HSet(c.hsetName, key, "0").Err()
-}
-
-// Get gets cached value by given key.
-func (c *RedisCacher) Get(key string) interface{} {
-	val, err := c.c.Get(c.prefix + key).Result()
-	if err != nil {
-		return nil
-	}
-	return val
-}
-
-// Delete deletes cached value by given key.
-func (c *RedisCacher) Delete(key string) error {
-	key = c.prefix + key
-	if err := c.c.Del(key).Err(); err != nil {
-		return err
-	}
-
-	if c.occupyMode {
-		return nil
-	}
-	return c.c.HDel(c.hsetName, key).Err()
-}
-
-// Incr increases cached int-type value by given key as a counter.
-func (c *RedisCacher) Incr(key string) error {
-	if !c.IsExist(key) {
-		return fmt.Errorf("key '%s' not exist", key)
-	}
-	return c.c.Incr(c.prefix + key).Err()
-}
-
-// Decr decreases cached int-type value by given key as a counter.
-func (c *RedisCacher) Decr(key string) error {
-	if !c.IsExist(key) {
-		return fmt.Errorf("key '%s' not exist", key)
-	}
-	return c.c.Decr(c.prefix + key).Err()
-}
-
-// IsExist returns true if cached value exists.
-func (c *RedisCacher) IsExist(key string) bool {
-	if c.c.Exists(c.prefix+key).Val() == 1 {
-		return true
-	}
-
-	if !c.occupyMode {
-		c.c.HDel(c.hsetName, c.prefix+key)
-	}
-	return false
-}
-
-// Flush deletes all cached data.
-func (c *RedisCacher) Flush() error {
-	if c.occupyMode {
-		return c.c.FlushDb().Err()
-	}
-
-	keys, err := c.c.HKeys(c.hsetName).Result()
-	if err != nil {
-		return err
-	}
-	if err = c.c.Del(keys...).Err(); err != nil {
-		return err
-	}
-	return c.c.Del(c.hsetName).Err()
-}
-
-// StartAndGC starts GC routine based on config string settings.
-// AdapterConfig: network=tcp,addr=:6379,password=macaron,db=0,pool_size=100,idle_timeout=180,hset_name=MacaronCache,prefix=cache:
-func (c *RedisCacher) StartAndGC(opts cache.Options) error {
-	c.hsetName = "MacaronCache"
-	c.occupyMode = opts.OccupyMode
-
-	cfg, err := ini.Load([]byte(strings.Replace(opts.AdapterConfig, ",", "\n", -1)))
-	if err != nil {
-		return err
-	}
-
-	opt := &redis.Options{
-		Network: "tcp",
-	}
-	for k, v := range cfg.Section("").KeysHash() {
-		switch k {
-		case "network":
-			opt.Network = v
-		case "addr":
-			opt.Addr = v
-		case "password":
-			opt.Password = v
-		case "db":
-			opt.DB = com.StrTo(v).MustInt()
-		case "pool_size":
-			opt.PoolSize = com.StrTo(v).MustInt()
-		case "idle_timeout":
-			opt.IdleTimeout, err = time.ParseDuration(v + "s")
-			if err != nil {
-				return fmt.Errorf("error parsing idle timeout: %v", err)
-			}
-		case "hset_name":
-			c.hsetName = v
-		case "prefix":
-			c.prefix = v
-		default:
-			return fmt.Errorf("session/redis: unsupported option '%s'", k)
-		}
-	}
-
-	c.c = redis.NewClient(opt)
-	if err = c.c.Ping().Err(); err != nil {
-		return err
-	}
-
-	return nil
-}
-
-func init() {
-	cache.Register("redis", &RedisCacher{})
-}
diff --git a/vendor/gitea.com/macaron/cache/redis/redis.goconvey b/vendor/gitea.com/macaron/cache/redis/redis.goconvey
deleted file mode 100644
index 8485e986e4..0000000000
--- a/vendor/gitea.com/macaron/cache/redis/redis.goconvey
+++ /dev/null
@@ -1 +0,0 @@
-ignore
\ No newline at end of file
diff --git a/vendor/gitea.com/macaron/session/redis/redis.go b/vendor/gitea.com/macaron/session/redis/redis.go
deleted file mode 100644
index 5f242d6b37..0000000000
--- a/vendor/gitea.com/macaron/session/redis/redis.go
+++ /dev/null
@@ -1,239 +0,0 @@
-// Copyright 2013 Beego Authors
-// Copyright 2014 The Macaron Authors
-//
-// Licensed under the Apache License, Version 2.0 (the "License"): you may
-// not use this file except in compliance with the License. You may obtain
-// a copy of the License at
-//
-//     http://www.apache.org/licenses/LICENSE-2.0
-//
-// Unless required by applicable law or agreed to in writing, software
-// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-// License for the specific language governing permissions and limitations
-// under the License.
-
-package session
-
-import (
-	"fmt"
-	"strings"
-	"sync"
-	"time"
-
-	"gitea.com/macaron/session"
-	"github.com/go-redis/redis"
-	"github.com/unknwon/com"
-	"gopkg.in/ini.v1"
-)
-
-// RedisStore represents a redis session store implementation.
-type RedisStore struct {
-	c           *redis.Client
-	prefix, sid string
-	duration    time.Duration
-	lock        sync.RWMutex
-	data        map[interface{}]interface{}
-}
-
-// NewRedisStore creates and returns a redis session store.
-func NewRedisStore(c *redis.Client, prefix, sid string, dur time.Duration, kv map[interface{}]interface{}) *RedisStore {
-	return &RedisStore{
-		c:        c,
-		prefix:   prefix,
-		sid:      sid,
-		duration: dur,
-		data:     kv,
-	}
-}
-
-// Set sets value to given key in session.
-func (s *RedisStore) Set(key, val interface{}) error {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-
-	s.data[key] = val
-	return nil
-}
-
-// Get gets value by given key in session.
-func (s *RedisStore) Get(key interface{}) interface{} {
-	s.lock.RLock()
-	defer s.lock.RUnlock()
-
-	return s.data[key]
-}
-
-// Delete delete a key from session.
-func (s *RedisStore) Delete(key interface{}) error {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-
-	delete(s.data, key)
-	return nil
-}
-
-// ID returns current session ID.
-func (s *RedisStore) ID() string {
-	return s.sid
-}
-
-// Release releases resource and save data to provider.
-func (s *RedisStore) Release() error {
-	// Skip encoding if the data is empty
-	if len(s.data) == 0 {
-		return nil
-	}
-
-	data, err := session.EncodeGob(s.data)
-	if err != nil {
-		return err
-	}
-
-	return s.c.Set(s.prefix+s.sid, string(data), s.duration).Err()
-}
-
-// Flush deletes all session data.
-func (s *RedisStore) Flush() error {
-	s.lock.Lock()
-	defer s.lock.Unlock()
-
-	s.data = make(map[interface{}]interface{})
-	return nil
-}
-
-// RedisProvider represents a redis session provider implementation.
-type RedisProvider struct {
-	c        *redis.Client
-	duration time.Duration
-	prefix   string
-}
-
-// Init initializes redis session provider.
-// configs: network=tcp,addr=:6379,password=macaron,db=0,pool_size=100,idle_timeout=180,prefix=session;
-func (p *RedisProvider) Init(maxlifetime int64, configs string) (err error) {
-	p.duration, err = time.ParseDuration(fmt.Sprintf("%ds", maxlifetime))
-	if err != nil {
-		return err
-	}
-
-	cfg, err := ini.Load([]byte(strings.Replace(configs, ",", "\n", -1)))
-	if err != nil {
-		return err
-	}
-
-	opt := &redis.Options{
-		Network: "tcp",
-	}
-	for k, v := range cfg.Section("").KeysHash() {
-		switch k {
-		case "network":
-			opt.Network = v
-		case "addr":
-			opt.Addr = v
-		case "password":
-			opt.Password = v
-		case "db":
-			opt.DB = com.StrTo(v).MustInt()
-		case "pool_size":
-			opt.PoolSize = com.StrTo(v).MustInt()
-		case "idle_timeout":
-			opt.IdleTimeout, err = time.ParseDuration(v + "s")
-			if err != nil {
-				return fmt.Errorf("error parsing idle timeout: %v", err)
-			}
-		case "prefix":
-			p.prefix = v
-		default:
-			return fmt.Errorf("session/redis: unsupported option '%s'", k)
-		}
-	}
-
-	p.c = redis.NewClient(opt)
-	return p.c.Ping().Err()
-}
-
-// Read returns raw session store by session ID.
-func (p *RedisProvider) Read(sid string) (session.RawStore, error) {
-	psid := p.prefix + sid
-	if !p.Exist(sid) {
-		if err := p.c.Set(psid, "", p.duration).Err(); err != nil {
-			return nil, err
-		}
-	}
-
-	var kv map[interface{}]interface{}
-	kvs, err := p.c.Get(psid).Result()
-	if err != nil {
-		return nil, err
-	}
-	if len(kvs) == 0 {
-		kv = make(map[interface{}]interface{})
-	} else {
-		kv, err = session.DecodeGob([]byte(kvs))
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return NewRedisStore(p.c, p.prefix, sid, p.duration, kv), nil
-}
-
-// Exist returns true if session with given ID exists.
-func (p *RedisProvider) Exist(sid string) bool {
-	v, err := p.c.Exists(p.prefix + sid).Result()
-	return err == nil && v == 1
-}
-
-// Destroy deletes a session by session ID.
-func (p *RedisProvider) Destroy(sid string) error {
-	return p.c.Del(p.prefix + sid).Err()
-}
-
-// Regenerate regenerates a session store from old session ID to new one.
-func (p *RedisProvider) Regenerate(oldsid, sid string) (_ session.RawStore, err error) {
-	poldsid := p.prefix + oldsid
-	psid := p.prefix + sid
-
-	if p.Exist(sid) {
-		return nil, fmt.Errorf("new sid '%s' already exists", sid)
-	} else if !p.Exist(oldsid) {
-		// Make a fake old session.
-		if err = p.c.Set(poldsid, "", p.duration).Err(); err != nil {
-			return nil, err
-		}
-	}
-
-	if err = p.c.Rename(poldsid, psid).Err(); err != nil {
-		return nil, err
-	}
-
-	var kv map[interface{}]interface{}
-	kvs, err := p.c.Get(psid).Result()
-	if err != nil {
-		return nil, err
-	}
-
-	if len(kvs) == 0 {
-		kv = make(map[interface{}]interface{})
-	} else {
-		kv, err = session.DecodeGob([]byte(kvs))
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	return NewRedisStore(p.c, p.prefix, sid, p.duration, kv), nil
-}
-
-// Count counts and returns number of sessions.
-func (p *RedisProvider) Count() int {
-	return int(p.c.DbSize().Val())
-}
-
-// GC calls GC to clean expired sessions.
-func (_ *RedisProvider) GC() {}
-
-func init() {
-	session.Register("redis", &RedisProvider{})
-}
diff --git a/vendor/gitea.com/macaron/session/redis/redis.goconvey b/vendor/gitea.com/macaron/session/redis/redis.goconvey
deleted file mode 100644
index 8485e986e4..0000000000
--- a/vendor/gitea.com/macaron/session/redis/redis.goconvey
+++ /dev/null
@@ -1 +0,0 @@
-ignore
\ No newline at end of file
diff --git a/vendor/github.com/go-redis/redis/.travis.yml b/vendor/github.com/go-redis/redis/.travis.yml
deleted file mode 100644
index 6b110b4cbb..0000000000
--- a/vendor/github.com/go-redis/redis/.travis.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-sudo: false
-language: go
-
-services:
-  - redis-server
-
-go:
-  - 1.9.x
-  - 1.10.x
-  - 1.11.x
-  - tip
-
-matrix:
-  allow_failures:
-    - go: tip
-
-install:
-  - go get github.com/onsi/ginkgo
-  - go get github.com/onsi/gomega
diff --git a/vendor/github.com/go-redis/redis/CHANGELOG.md b/vendor/github.com/go-redis/redis/CHANGELOG.md
deleted file mode 100644
index 19645661a4..0000000000
--- a/vendor/github.com/go-redis/redis/CHANGELOG.md
+++ /dev/null
@@ -1,25 +0,0 @@
-# Changelog
-
-## Unreleased
-
-- Cluster and Ring pipelines process commands for each node in its own goroutine.
-
-## 6.14
-
-- Added Options.MinIdleConns.
-- Added Options.MaxConnAge.
-- PoolStats.FreeConns is renamed to PoolStats.IdleConns.
-- Add Client.Do to simplify creating custom commands.
-- Add Cmd.String, Cmd.Int, Cmd.Int64, Cmd.Uint64, Cmd.Float64, and Cmd.Bool helpers.
-- Lower memory usage.
-
-## v6.13
-
-- Ring got new options called `HashReplicas` and `Hash`. It is recommended to set `HashReplicas = 1000` for better keys distribution between shards.
-- Cluster client was optimized to use much less memory when reloading cluster state.
-- PubSub.ReceiveMessage is re-worked to not use ReceiveTimeout so it does not lose data when timeout occurres. In most cases it is recommended to use PubSub.Channel instead.
-- Dialer.KeepAlive is set to 5 minutes by default.
-
-## v6.12
-
-- ClusterClient got new option called `ClusterSlots` which allows to build cluster of normal Redis Servers that don't have cluster mode enabled. See https://godoc.org/github.com/go-redis/redis#example-NewClusterClient--ManualSetup
diff --git a/vendor/github.com/go-redis/redis/internal/error.go b/vendor/github.com/go-redis/redis/internal/error.go
deleted file mode 100644
index 34f6bd4dc7..0000000000
--- a/vendor/github.com/go-redis/redis/internal/error.go
+++ /dev/null
@@ -1,89 +0,0 @@
-package internal
-
-import (
-	"io"
-	"net"
-	"strings"
-
-	"github.com/go-redis/redis/internal/proto"
-)
-
-func IsRetryableError(err error, retryTimeout bool) bool {
-	if err == nil {
-		return false
-	}
-	if err == io.EOF {
-		return true
-	}
-	if netErr, ok := err.(net.Error); ok {
-		if netErr.Timeout() {
-			return retryTimeout
-		}
-		return true
-	}
-	s := err.Error()
-	if s == "ERR max number of clients reached" {
-		return true
-	}
-	if strings.HasPrefix(s, "LOADING ") {
-		return true
-	}
-	if strings.HasPrefix(s, "READONLY ") {
-		return true
-	}
-	if strings.HasPrefix(s, "CLUSTERDOWN ") {
-		return true
-	}
-	return false
-}
-
-func IsRedisError(err error) bool {
-	_, ok := err.(proto.RedisError)
-	return ok
-}
-
-func IsBadConn(err error, allowTimeout bool) bool {
-	if err == nil {
-		return false
-	}
-	if IsRedisError(err) {
-		// #790
-		return IsReadOnlyError(err)
-	}
-	if allowTimeout {
-		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
-			return false
-		}
-	}
-	return true
-}
-
-func IsMovedError(err error) (moved bool, ask bool, addr string) {
-	if !IsRedisError(err) {
-		return
-	}
-
-	s := err.Error()
-	if strings.HasPrefix(s, "MOVED ") {
-		moved = true
-	} else if strings.HasPrefix(s, "ASK ") {
-		ask = true
-	} else {
-		return
-	}
-
-	ind := strings.LastIndex(s, " ")
-	if ind == -1 {
-		return false, false, ""
-	}
-	addr = s[ind+1:]
-	return
-}
-
-func IsLoadingError(err error) bool {
-	return strings.HasPrefix(err.Error(), "LOADING ")
-}
-
-func IsReadOnlyError(err error) bool {
-	return strings.HasPrefix(err.Error(), "READONLY ")
-}
diff --git a/vendor/github.com/go-redis/redis/internal/log.go b/vendor/github.com/go-redis/redis/internal/log.go
deleted file mode 100644
index fd14222eee..0000000000
--- a/vendor/github.com/go-redis/redis/internal/log.go
+++ /dev/null
@@ -1,15 +0,0 @@
-package internal
-
-import (
-	"fmt"
-	"log"
-)
-
-var Logger *log.Logger
-
-func Logf(s string, args ...interface{}) {
-	if Logger == nil {
-		return
-	}
-	Logger.Output(2, fmt.Sprintf(s, args...))
-}
diff --git a/vendor/github.com/go-redis/redis/internal/pool/conn.go b/vendor/github.com/go-redis/redis/internal/pool/conn.go
deleted file mode 100644
index 1095bfe59b..0000000000
--- a/vendor/github.com/go-redis/redis/internal/pool/conn.go
+++ /dev/null
@@ -1,93 +0,0 @@
-package pool
-
-import (
-	"net"
-	"sync/atomic"
-	"time"
-
-	"github.com/go-redis/redis/internal/proto"
-)
-
-var noDeadline = time.Time{}
-
-type Conn struct {
-	netConn net.Conn
-
-	rd       *proto.Reader
-	rdLocked bool
-	wr       *proto.Writer
-
-	InitedAt time.Time
-	pooled   bool
-	usedAt   atomic.Value
-}
-
-func NewConn(netConn net.Conn) *Conn {
-	cn := &Conn{
-		netConn: netConn,
-	}
-	cn.rd = proto.NewReader(netConn)
-	cn.wr = proto.NewWriter(netConn)
-	cn.SetUsedAt(time.Now())
-	return cn
-}
-
-func (cn *Conn) UsedAt() time.Time {
-	return cn.usedAt.Load().(time.Time)
-}
-
-func (cn *Conn) SetUsedAt(tm time.Time) {
-	cn.usedAt.Store(tm)
-}
-
-func (cn *Conn) SetNetConn(netConn net.Conn) {
-	cn.netConn = netConn
-	cn.rd.Reset(netConn)
-	cn.wr.Reset(netConn)
-}
-
-func (cn *Conn) setReadTimeout(timeout time.Duration) error {
-	now := time.Now()
-	cn.SetUsedAt(now)
-	if timeout > 0 {
-		return cn.netConn.SetReadDeadline(now.Add(timeout))
-	}
-	return cn.netConn.SetReadDeadline(noDeadline)
-}
-
-func (cn *Conn) setWriteTimeout(timeout time.Duration) error {
-	now := time.Now()
-	cn.SetUsedAt(now)
-	if timeout > 0 {
-		return cn.netConn.SetWriteDeadline(now.Add(timeout))
-	}
-	return cn.netConn.SetWriteDeadline(noDeadline)
-}
-
-func (cn *Conn) Write(b []byte) (int, error) {
-	return cn.netConn.Write(b)
-}
-
-func (cn *Conn) RemoteAddr() net.Addr {
-	return cn.netConn.RemoteAddr()
-}
-
-func (cn *Conn) WithReader(timeout time.Duration, fn func(rd *proto.Reader) error) error {
-	_ = cn.setReadTimeout(timeout)
-	return fn(cn.rd)
-}
-
-func (cn *Conn) WithWriter(timeout time.Duration, fn func(wr *proto.Writer) error) error {
-	_ = cn.setWriteTimeout(timeout)
-
-	firstErr := fn(cn.wr)
-	err := cn.wr.Flush()
-	if err != nil && firstErr == nil {
-		firstErr = err
-	}
-	return firstErr
-}
-
-func (cn *Conn) Close() error {
-	return cn.netConn.Close()
-}
diff --git a/vendor/github.com/go-redis/redis/internal/pool/pool_single.go b/vendor/github.com/go-redis/redis/internal/pool/pool_single.go
deleted file mode 100644
index b35b78afbd..0000000000
--- a/vendor/github.com/go-redis/redis/internal/pool/pool_single.go
+++ /dev/null
@@ -1,53 +0,0 @@
-package pool
-
-type SingleConnPool struct {
-	cn *Conn
-}
-
-var _ Pooler = (*SingleConnPool)(nil)
-
-func NewSingleConnPool(cn *Conn) *SingleConnPool {
-	return &SingleConnPool{
-		cn: cn,
-	}
-}
-
-func (p *SingleConnPool) NewConn() (*Conn, error) {
-	panic("not implemented")
-}
-
-func (p *SingleConnPool) CloseConn(*Conn) error {
-	panic("not implemented")
-}
-
-func (p *SingleConnPool) Get() (*Conn, error) {
-	return p.cn, nil
-}
-
-func (p *SingleConnPool) Put(cn *Conn) {
-	if p.cn != cn {
-		panic("p.cn != cn")
-	}
-}
-
-func (p *SingleConnPool) Remove(cn *Conn) {
-	if p.cn != cn {
-		panic("p.cn != cn")
-	}
-}
-
-func (p *SingleConnPool) Len() int {
-	return 1
-}
-
-func (p *SingleConnPool) IdleLen() int {
-	return 0
-}
-
-func (p *SingleConnPool) Stats() *Stats {
-	return nil
-}
-
-func (p *SingleConnPool) Close() error {
-	return nil
-}
diff --git a/vendor/github.com/go-redis/redis/internal/util.go b/vendor/github.com/go-redis/redis/internal/util.go
deleted file mode 100644
index ffd2353e0e..0000000000
--- a/vendor/github.com/go-redis/redis/internal/util.go
+++ /dev/null
@@ -1,29 +0,0 @@
-package internal
-
-import "github.com/go-redis/redis/internal/util"
-
-func ToLower(s string) string {
-	if isLower(s) {
-		return s
-	}
-
-	b := make([]byte, len(s))
-	for i := range b {
-		c := s[i]
-		if c >= 'A' && c <= 'Z' {
-			c += 'a' - 'A'
-		}
-		b[i] = c
-	}
-	return util.BytesToString(b)
-}
-
-func isLower(s string) bool {
-	for i := 0; i < len(s); i++ {
-		c := s[i]
-		if c >= 'A' && c <= 'Z' {
-			return false
-		}
-	}
-	return true
-}
diff --git a/vendor/github.com/go-redis/redis/redis.go b/vendor/github.com/go-redis/redis/redis.go
deleted file mode 100644
index aca30648f5..0000000000
--- a/vendor/github.com/go-redis/redis/redis.go
+++ /dev/null
@@ -1,580 +0,0 @@
-package redis
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"os"
-	"time"
-
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/pool"
-	"github.com/go-redis/redis/internal/proto"
-)
-
-// Nil reply Redis returns when key does not exist.
-const Nil = proto.Nil
-
-func init() {
-	SetLogger(log.New(os.Stderr, "redis: ", log.LstdFlags|log.Lshortfile))
-}
-
-func SetLogger(logger *log.Logger) {
-	internal.Logger = logger
-}
-
-type baseClient struct {
-	opt      *Options
-	connPool pool.Pooler
-	limiter  Limiter
-
-	process           func(Cmder) error
-	processPipeline   func([]Cmder) error
-	processTxPipeline func([]Cmder) error
-
-	onClose func() error // hook called when client is closed
-}
-
-func (c *baseClient) init() {
-	c.process = c.defaultProcess
-	c.processPipeline = c.defaultProcessPipeline
-	c.processTxPipeline = c.defaultProcessTxPipeline
-}
-
-func (c *baseClient) String() string {
-	return fmt.Sprintf("Redis<%s db:%d>", c.getAddr(), c.opt.DB)
-}
-
-func (c *baseClient) newConn() (*pool.Conn, error) {
-	cn, err := c.connPool.NewConn()
-	if err != nil {
-		return nil, err
-	}
-
-	if cn.InitedAt.IsZero() {
-		if err := c.initConn(cn); err != nil {
-			_ = c.connPool.CloseConn(cn)
-			return nil, err
-		}
-	}
-
-	return cn, nil
-}
-
-func (c *baseClient) getConn() (*pool.Conn, error) {
-	if c.limiter != nil {
-		err := c.limiter.Allow()
-		if err != nil {
-			return nil, err
-		}
-	}
-
-	cn, err := c._getConn()
-	if err != nil {
-		if c.limiter != nil {
-			c.limiter.ReportResult(err)
-		}
-		return nil, err
-	}
-	return cn, nil
-}
-
-func (c *baseClient) _getConn() (*pool.Conn, error) {
-	cn, err := c.connPool.Get()
-	if err != nil {
-		return nil, err
-	}
-
-	if cn.InitedAt.IsZero() {
-		err := c.initConn(cn)
-		if err != nil {
-			c.connPool.Remove(cn)
-			return nil, err
-		}
-	}
-
-	return cn, nil
-}
-
-func (c *baseClient) releaseConn(cn *pool.Conn, err error) {
-	if c.limiter != nil {
-		c.limiter.ReportResult(err)
-	}
-
-	if internal.IsBadConn(err, false) {
-		c.connPool.Remove(cn)
-	} else {
-		c.connPool.Put(cn)
-	}
-}
-
-func (c *baseClient) releaseConnStrict(cn *pool.Conn, err error) {
-	if c.limiter != nil {
-		c.limiter.ReportResult(err)
-	}
-
-	if err == nil || internal.IsRedisError(err) {
-		c.connPool.Put(cn)
-	} else {
-		c.connPool.Remove(cn)
-	}
-}
-
-func (c *baseClient) initConn(cn *pool.Conn) error {
-	cn.InitedAt = time.Now()
-
-	if c.opt.Password == "" &&
-		c.opt.DB == 0 &&
-		!c.opt.readOnly &&
-		c.opt.OnConnect == nil {
-		return nil
-	}
-
-	conn := newConn(c.opt, cn)
-	_, err := conn.Pipelined(func(pipe Pipeliner) error {
-		if c.opt.Password != "" {
-			pipe.Auth(c.opt.Password)
-		}
-
-		if c.opt.DB > 0 {
-			pipe.Select(c.opt.DB)
-		}
-
-		if c.opt.readOnly {
-			pipe.ReadOnly()
-		}
-
-		return nil
-	})
-	if err != nil {
-		return err
-	}
-
-	if c.opt.OnConnect != nil {
-		return c.opt.OnConnect(conn)
-	}
-	return nil
-}
-
-// Do creates a Cmd from the args and processes the cmd.
-func (c *baseClient) Do(args ...interface{}) *Cmd {
-	cmd := NewCmd(args...)
-	_ = c.Process(cmd)
-	return cmd
-}
-
-// WrapProcess wraps function that processes Redis commands.
-func (c *baseClient) WrapProcess(
-	fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error,
-) {
-	c.process = fn(c.process)
-}
-
-func (c *baseClient) Process(cmd Cmder) error {
-	return c.process(cmd)
-}
-
-func (c *baseClient) defaultProcess(cmd Cmder) error {
-	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
-		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
-		}
-
-		cn, err := c.getConn()
-		if err != nil {
-			cmd.setErr(err)
-			if internal.IsRetryableError(err, true) {
-				continue
-			}
-			return err
-		}
-
-		err = cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-			return writeCmd(wr, cmd)
-		})
-		if err != nil {
-			c.releaseConn(cn, err)
-			cmd.setErr(err)
-			if internal.IsRetryableError(err, true) {
-				continue
-			}
-			return err
-		}
-
-		err = cn.WithReader(c.cmdTimeout(cmd), func(rd *proto.Reader) error {
-			return cmd.readReply(rd)
-		})
-		c.releaseConn(cn, err)
-		if err != nil && internal.IsRetryableError(err, cmd.readTimeout() == nil) {
-			continue
-		}
-
-		return err
-	}
-
-	return cmd.Err()
-}
-
-func (c *baseClient) retryBackoff(attempt int) time.Duration {
-	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
-}
-
-func (c *baseClient) cmdTimeout(cmd Cmder) time.Duration {
-	if timeout := cmd.readTimeout(); timeout != nil {
-		t := *timeout
-		if t == 0 {
-			return 0
-		}
-		return t + 10*time.Second
-	}
-	return c.opt.ReadTimeout
-}
-
-// Close closes the client, releasing any open resources.
-//
-// It is rare to Close a Client, as the Client is meant to be
-// long-lived and shared between many goroutines.
-func (c *baseClient) Close() error {
-	var firstErr error
-	if c.onClose != nil {
-		if err := c.onClose(); err != nil && firstErr == nil {
-			firstErr = err
-		}
-	}
-	if err := c.connPool.Close(); err != nil && firstErr == nil {
-		firstErr = err
-	}
-	return firstErr
-}
-
-func (c *baseClient) getAddr() string {
-	return c.opt.Addr
-}
-
-func (c *baseClient) WrapProcessPipeline(
-	fn func(oldProcess func([]Cmder) error) func([]Cmder) error,
-) {
-	c.processPipeline = fn(c.processPipeline)
-	c.processTxPipeline = fn(c.processTxPipeline)
-}
-
-func (c *baseClient) defaultProcessPipeline(cmds []Cmder) error {
-	return c.generalProcessPipeline(cmds, c.pipelineProcessCmds)
-}
-
-func (c *baseClient) defaultProcessTxPipeline(cmds []Cmder) error {
-	return c.generalProcessPipeline(cmds, c.txPipelineProcessCmds)
-}
-
-type pipelineProcessor func(*pool.Conn, []Cmder) (bool, error)
-
-func (c *baseClient) generalProcessPipeline(cmds []Cmder, p pipelineProcessor) error {
-	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
-		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
-		}
-
-		cn, err := c.getConn()
-		if err != nil {
-			setCmdsErr(cmds, err)
-			return err
-		}
-
-		canRetry, err := p(cn, cmds)
-		c.releaseConnStrict(cn, err)
-
-		if !canRetry || !internal.IsRetryableError(err, true) {
-			break
-		}
-	}
-	return cmdsFirstErr(cmds)
-}
-
-func (c *baseClient) pipelineProcessCmds(cn *pool.Conn, cmds []Cmder) (bool, error) {
-	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-		return writeCmd(wr, cmds...)
-	})
-	if err != nil {
-		setCmdsErr(cmds, err)
-		return true, err
-	}
-
-	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-		return pipelineReadCmds(rd, cmds)
-	})
-	return true, err
-}
-
-func pipelineReadCmds(rd *proto.Reader, cmds []Cmder) error {
-	for _, cmd := range cmds {
-		err := cmd.readReply(rd)
-		if err != nil && !internal.IsRedisError(err) {
-			return err
-		}
-	}
-	return nil
-}
-
-func (c *baseClient) txPipelineProcessCmds(cn *pool.Conn, cmds []Cmder) (bool, error) {
-	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-		return txPipelineWriteMulti(wr, cmds)
-	})
-	if err != nil {
-		setCmdsErr(cmds, err)
-		return true, err
-	}
-
-	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-		err := txPipelineReadQueued(rd, cmds)
-		if err != nil {
-			setCmdsErr(cmds, err)
-			return err
-		}
-		return pipelineReadCmds(rd, cmds)
-	})
-	return false, err
-}
-
-func txPipelineWriteMulti(wr *proto.Writer, cmds []Cmder) error {
-	multiExec := make([]Cmder, 0, len(cmds)+2)
-	multiExec = append(multiExec, NewStatusCmd("MULTI"))
-	multiExec = append(multiExec, cmds...)
-	multiExec = append(multiExec, NewSliceCmd("EXEC"))
-	return writeCmd(wr, multiExec...)
-}
-
-func txPipelineReadQueued(rd *proto.Reader, cmds []Cmder) error {
-	// Parse queued replies.
-	var statusCmd StatusCmd
-	err := statusCmd.readReply(rd)
-	if err != nil {
-		return err
-	}
-
-	for range cmds {
-		err = statusCmd.readReply(rd)
-		if err != nil && !internal.IsRedisError(err) {
-			return err
-		}
-	}
-
-	// Parse number of replies.
-	line, err := rd.ReadLine()
-	if err != nil {
-		if err == Nil {
-			err = TxFailedErr
-		}
-		return err
-	}
-
-	switch line[0] {
-	case proto.ErrorReply:
-		return proto.ParseErrorReply(line)
-	case proto.ArrayReply:
-		// ok
-	default:
-		err := fmt.Errorf("redis: expected '*', but got line %q", line)
-		return err
-	}
-
-	return nil
-}
-
-//------------------------------------------------------------------------------
-
-// Client is a Redis client representing a pool of zero or more
-// underlying connections. It's safe for concurrent use by multiple
-// goroutines.
-type Client struct {
-	baseClient
-	cmdable
-
-	ctx context.Context
-}
-
-// NewClient returns a client to the Redis Server specified by Options.
-func NewClient(opt *Options) *Client {
-	opt.init()
-
-	c := Client{
-		baseClient: baseClient{
-			opt:      opt,
-			connPool: newConnPool(opt),
-		},
-	}
-	c.baseClient.init()
-	c.init()
-
-	return &c
-}
-
-func (c *Client) init() {
-	c.cmdable.setProcessor(c.Process)
-}
-
-func (c *Client) Context() context.Context {
-	if c.ctx != nil {
-		return c.ctx
-	}
-	return context.Background()
-}
-
-func (c *Client) WithContext(ctx context.Context) *Client {
-	if ctx == nil {
-		panic("nil context")
-	}
-	c2 := c.clone()
-	c2.ctx = ctx
-	return c2
-}
-
-func (c *Client) clone() *Client {
-	cp := *c
-	cp.init()
-	return &cp
-}
-
-// Options returns read-only Options that were used to create the client.
-func (c *Client) Options() *Options {
-	return c.opt
-}
-
-func (c *Client) SetLimiter(l Limiter) *Client {
-	c.limiter = l
-	return c
-}
-
-type PoolStats pool.Stats
-
-// PoolStats returns connection pool stats.
-func (c *Client) PoolStats() *PoolStats {
-	stats := c.connPool.Stats()
-	return (*PoolStats)(stats)
-}
-
-func (c *Client) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.Pipeline().Pipelined(fn)
-}
-
-func (c *Client) Pipeline() Pipeliner {
-	pipe := Pipeline{
-		exec: c.processPipeline,
-	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
-	return &pipe
-}
-
-func (c *Client) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.TxPipeline().Pipelined(fn)
-}
-
-// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
-func (c *Client) TxPipeline() Pipeliner {
-	pipe := Pipeline{
-		exec: c.processTxPipeline,
-	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
-	return &pipe
-}
-
-func (c *Client) pubSub() *PubSub {
-	pubsub := &PubSub{
-		opt: c.opt,
-
-		newConn: func(channels []string) (*pool.Conn, error) {
-			return c.newConn()
-		},
-		closeConn: c.connPool.CloseConn,
-	}
-	pubsub.init()
-	return pubsub
-}
-
-// Subscribe subscribes the client to the specified channels.
-// Channels can be omitted to create empty subscription.
-// Note that this method does not wait on a response from Redis, so the
-// subscription may not be active immediately. To force the connection to wait,
-// you may call the Receive() method on the returned *PubSub like so:
-//
-//    sub := client.Subscribe(queryResp)
-//    iface, err := sub.Receive()
-//    if err != nil {
-//        // handle error
-//    }
-//
-//    // Should be *Subscription, but others are possible if other actions have been
-//    // taken on sub since it was created.
-//    switch iface.(type) {
-//    case *Subscription:
-//        // subscribe succeeded
-//    case *Message:
-//        // received first message
-//    case *Pong:
-//        // pong received
-//    default:
-//        // handle error
-//    }
-//
-//    ch := sub.Channel()
-func (c *Client) Subscribe(channels ...string) *PubSub {
-	pubsub := c.pubSub()
-	if len(channels) > 0 {
-		_ = pubsub.Subscribe(channels...)
-	}
-	return pubsub
-}
-
-// PSubscribe subscribes the client to the given patterns.
-// Patterns can be omitted to create empty subscription.
-func (c *Client) PSubscribe(channels ...string) *PubSub {
-	pubsub := c.pubSub()
-	if len(channels) > 0 {
-		_ = pubsub.PSubscribe(channels...)
-	}
-	return pubsub
-}
-
-//------------------------------------------------------------------------------
-
-// Conn is like Client, but its pool contains single connection.
-type Conn struct {
-	baseClient
-	statefulCmdable
-}
-
-func newConn(opt *Options, cn *pool.Conn) *Conn {
-	c := Conn{
-		baseClient: baseClient{
-			opt:      opt,
-			connPool: pool.NewSingleConnPool(cn),
-		},
-	}
-	c.baseClient.init()
-	c.statefulCmdable.setProcessor(c.Process)
-	return &c
-}
-
-func (c *Conn) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.Pipeline().Pipelined(fn)
-}
-
-func (c *Conn) Pipeline() Pipeliner {
-	pipe := Pipeline{
-		exec: c.processPipeline,
-	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
-	return &pipe
-}
-
-func (c *Conn) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.TxPipeline().Pipelined(fn)
-}
-
-// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
-func (c *Conn) TxPipeline() Pipeliner {
-	pipe := Pipeline{
-		exec: c.processTxPipeline,
-	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
-	return &pipe
-}
diff --git a/vendor/github.com/go-redis/redis/.gitignore b/vendor/github.com/go-redis/redis/v7/.gitignore
index ebfe903bcd..ebfe903bcd 100644
--- a/vendor/github.com/go-redis/redis/.gitignore
+++ b/vendor/github.com/go-redis/redis/v7/.gitignore
diff --git a/vendor/github.com/go-redis/redis/v7/.golangci.yml b/vendor/github.com/go-redis/redis/v7/.golangci.yml
new file mode 100644
index 0000000000..912dab1ef3
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/.golangci.yml
@@ -0,0 +1,15 @@
+run:
+  concurrency: 8
+  deadline: 5m
+  tests: false
+linters:
+  enable-all: true
+  disable:
+    - funlen
+    - gochecknoglobals
+    - gocognit
+    - goconst
+    - godox
+    - gosec
+    - maligned
+    - wsl
diff --git a/vendor/github.com/go-redis/redis/v7/.travis.yml b/vendor/github.com/go-redis/redis/v7/.travis.yml
new file mode 100644
index 0000000000..3f93932bc8
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/.travis.yml
@@ -0,0 +1,22 @@
+dist: xenial
+language: go
+
+services:
+  - redis-server
+
+go:
+  - 1.12.x
+  - 1.13.x
+  - tip
+
+matrix:
+  allow_failures:
+    - go: tip
+
+env:
+  - GO111MODULE=on
+
+go_import_path: github.com/go-redis/redis
+
+before_install:
+  - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s -- -b $(go env GOPATH)/bin v1.21.0
diff --git a/vendor/github.com/go-redis/redis/v7/CHANGELOG.md b/vendor/github.com/go-redis/redis/v7/CHANGELOG.md
new file mode 100644
index 0000000000..bd4eccff24
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/CHANGELOG.md
@@ -0,0 +1,46 @@
+# Changelog
+
+## v7.2
+
+- Existing `HMSet` is renamed to `HSet` and old deprecated `HMSet` is restored for Redis 3 users.
+
+## v7.1
+
+- Existing `Cmd.String` is renamed to `Cmd.Text`. New `Cmd.String` implements `fmt.Stringer` interface.
+
+## v7
+
+- *Important*. Tx.Pipeline now returns a non-transactional pipeline. Use Tx.TxPipeline for a transactional pipeline.
+- WrapProcess is replaced with more convenient AddHook that has access to context.Context.
+- WithContext now can not be used to create a shallow copy of the client.
+- New methods ProcessContext, DoContext, and ExecContext.
+- Client respects Context.Deadline when setting net.Conn deadline.
+- Client listens on Context.Done while waiting for a connection from the pool and returns an error when context context is cancelled.
+- Add PubSub.ChannelWithSubscriptions that sends `*Subscription` in addition to `*Message` to allow detecting reconnections.
+- `time.Time` is now marshalled in RFC3339 format. `rdb.Get("foo").Time()` helper is added to parse the time.
+- `SetLimiter` is removed and added `Options.Limiter` instead.
+- `HMSet` is deprecated as of Redis v4.
+
+## v6.15
+
+- Cluster and Ring pipelines process commands for each node in its own goroutine.
+
+## 6.14
+
+- Added Options.MinIdleConns.
+- Added Options.MaxConnAge.
+- PoolStats.FreeConns is renamed to PoolStats.IdleConns.
+- Add Client.Do to simplify creating custom commands.
+- Add Cmd.String, Cmd.Int, Cmd.Int64, Cmd.Uint64, Cmd.Float64, and Cmd.Bool helpers.
+- Lower memory usage.
+
+## v6.13
+
+- Ring got new options called `HashReplicas` and `Hash`. It is recommended to set `HashReplicas = 1000` for better keys distribution between shards.
+- Cluster client was optimized to use much less memory when reloading cluster state.
+- PubSub.ReceiveMessage is re-worked to not use ReceiveTimeout so it does not lose data when timeout occurres. In most cases it is recommended to use PubSub.Channel instead.
+- Dialer.KeepAlive is set to 5 minutes by default.
+
+## v6.12
+
+- ClusterClient got new option called `ClusterSlots` which allows to build cluster of normal Redis Servers that don't have cluster mode enabled. See https://godoc.org/github.com/go-redis/redis#example-NewClusterClient--ManualSetup
diff --git a/vendor/github.com/go-redis/redis/LICENSE b/vendor/github.com/go-redis/redis/v7/LICENSE
index 298bed9bea..298bed9bea 100644
--- a/vendor/github.com/go-redis/redis/LICENSE
+++ b/vendor/github.com/go-redis/redis/v7/LICENSE
diff --git a/vendor/github.com/go-redis/redis/Makefile b/vendor/github.com/go-redis/redis/v7/Makefile
index fa3b4e004f..86609c6e07 100644
--- a/vendor/github.com/go-redis/redis/Makefile
+++ b/vendor/github.com/go-redis/redis/v7/Makefile
@@ -1,10 +1,9 @@
 all: testdeps
 	go test ./...
 	go test ./... -short -race
+	go test ./... -run=NONE -bench=. -benchmem
 	env GOOS=linux GOARCH=386 go test ./...
-	go vet
-	go get github.com/gordonklaus/ineffassign
-	ineffassign .
+	golangci-lint run
 
 testdeps: testdata/redis/src/redis-server
 
@@ -15,8 +14,7 @@ bench: testdeps
 
 testdata/redis:
 	mkdir -p $@
-	wget -qO- https://github.com/antirez/redis/archive/5.0.tar.gz | tar xvz --strip-components=1 -C $@
+	wget -qO- http://download.redis.io/redis-stable.tar.gz | tar xvz --strip-components=1 -C $@
 
 testdata/redis/src/redis-server: testdata/redis
-	sed -i.bak 's/libjemalloc.a/libjemalloc.a -lrt/g' $</src/Makefile
 	cd $< && make all
diff --git a/vendor/github.com/go-redis/redis/README.md b/vendor/github.com/go-redis/redis/v7/README.md
index 7d05b44661..0fbb506ead 100644
--- a/vendor/github.com/go-redis/redis/README.md
+++ b/vendor/github.com/go-redis/redis/v7/README.md
@@ -9,7 +9,7 @@ Supports:
 - Redis 3 commands except QUIT, MONITOR, SLOWLOG and SYNC.
 - Automatic connection pooling with [circuit breaker](https://en.wikipedia.org/wiki/Circuit_breaker_design_pattern) support.
 - [Pub/Sub](https://godoc.org/github.com/go-redis/redis#PubSub).
-- [Transactions](https://godoc.org/github.com/go-redis/redis#Multi).
+- [Transactions](https://godoc.org/github.com/go-redis/redis#example-Client-TxPipeline).
 - [Pipeline](https://godoc.org/github.com/go-redis/redis#example-Client-Pipeline) and [TxPipeline](https://godoc.org/github.com/go-redis/redis#example-Client-TxPipeline).
 - [Scripting](https://godoc.org/github.com/go-redis/redis#Script).
 - [Timeouts](https://godoc.org/github.com/go-redis/redis#Options).
@@ -20,28 +20,29 @@ Supports:
 - [Instrumentation](https://godoc.org/github.com/go-redis/redis#ex-package--Instrumentation).
 - [Cache friendly](https://github.com/go-redis/cache).
 - [Rate limiting](https://github.com/go-redis/redis_rate).
-- [Distributed Locks](https://github.com/bsm/redis-lock).
+- [Distributed Locks](https://github.com/bsm/redislock).
 
 API docs: https://godoc.org/github.com/go-redis/redis.
 Examples: https://godoc.org/github.com/go-redis/redis#pkg-examples.
 
 ## Installation
 
-Install:
+go-redis requires a Go version with [Modules](https://github.com/golang/go/wiki/Modules) support and uses import versioning. So please make sure to initialize a Go module before installing go-redis:
 
-```shell
-go get -u github.com/go-redis/redis
+``` shell
+go mod init github.com/my/repo
+go get github.com/go-redis/redis/v7
 ```
 
 Import:
 
-```go
-import "github.com/go-redis/redis"
+``` go
+import "github.com/go-redis/redis/v7"
 ```
 
 ## Quickstart
 
-```go
+``` go
 func ExampleNewClient() {
 	client := redis.NewClient(&redis.Options{
 		Addr:     "localhost:6379",
@@ -55,6 +56,11 @@ func ExampleNewClient() {
 }
 
 func ExampleClient() {
+	client := redis.NewClient(&redis.Options{
+		Addr:     "localhost:6379",
+		Password: "", // no password set
+		DB:       0,  // use default DB
+	})
 	err := client.Set("key", "value", 0).Err()
 	if err != nil {
 		panic(err)
@@ -87,15 +93,15 @@ Please go through [examples](https://godoc.org/github.com/go-redis/redis#pkg-exa
 
 Some corner cases:
 
-```go
+``` go
 // SET key value EX 10 NX
 set, err := client.SetNX("key", "value", 10*time.Second).Result()
 
 // SORT list LIMIT 0 2 ASC
-vals, err := client.Sort("list", redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
+vals, err := client.Sort("list", &redis.Sort{Offset: 0, Count: 2, Order: "ASC"}).Result()
 
 // ZRANGEBYSCORE zset -inf +inf WITHSCORES LIMIT 0 2
-vals, err := client.ZRangeByScoreWithScores("zset", redis.ZRangeBy{
+vals, err := client.ZRangeByScoreWithScores("zset", &redis.ZRangeBy{
 	Min: "-inf",
 	Max: "+inf",
 	Offset: 0,
@@ -103,44 +109,20 @@ vals, err := client.ZRangeByScoreWithScores("zset", redis.ZRangeBy{
 }).Result()
 
 // ZINTERSTORE out 2 zset1 zset2 WEIGHTS 2 3 AGGREGATE SUM
-vals, err := client.ZInterStore("out", redis.ZStore{Weights: []int64{2, 3}}, "zset1", "zset2").Result()
+vals, err := client.ZInterStore("out", &redis.ZStore{
+	Keys: []string{"zset1", "zset2"},
+	Weights: []int64{2, 3}
+}).Result()
 
 // EVAL "return {KEYS[1],ARGV[1]}" 1 "key" "hello"
 vals, err := client.Eval("return {KEYS[1],ARGV[1]}", []string{"key"}, "hello").Result()
-```
 
-## Benchmark
-
-go-redis vs redigo:
-
-```
-BenchmarkSetGoRedis10Conns64Bytes-4 	  200000	      7621 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis100Conns64Bytes-4	  200000	      7554 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis10Conns1KB-4     	  200000	      7697 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis100Conns1KB-4    	  200000	      7688 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis10Conns10KB-4    	  200000	      9214 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis100Conns10KB-4   	  200000	      9181 ns/op	     210 B/op	       6 allocs/op
-BenchmarkSetGoRedis10Conns1MB-4     	    2000	    583242 ns/op	    2337 B/op	       6 allocs/op
-BenchmarkSetGoRedis100Conns1MB-4    	    2000	    583089 ns/op	    2338 B/op	       6 allocs/op
-BenchmarkSetRedigo10Conns64Bytes-4  	  200000	      7576 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo100Conns64Bytes-4 	  200000	      7782 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo10Conns1KB-4      	  200000	      7958 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo100Conns1KB-4     	  200000	      7725 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo10Conns10KB-4     	  100000	     18442 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo100Conns10KB-4    	  100000	     18818 ns/op	     208 B/op	       7 allocs/op
-BenchmarkSetRedigo10Conns1MB-4      	    2000	    668829 ns/op	     226 B/op	       7 allocs/op
-BenchmarkSetRedigo100Conns1MB-4     	    2000	    679542 ns/op	     226 B/op	       7 allocs/op
-```
-
-Redis Cluster:
-
-```
-BenchmarkRedisPing-4                	  200000	      6983 ns/op	     116 B/op	       4 allocs/op
-BenchmarkRedisClusterPing-4         	  100000	     11535 ns/op	     117 B/op	       4 allocs/op
+// custom command
+res, err := client.Do("set", "key", "value").Result()
 ```
 
 ## See also
 
 - [Golang PostgreSQL ORM](https://github.com/go-pg/pg)
 - [Golang msgpack](https://github.com/vmihailenco/msgpack)
-- [Golang message task queue](https://github.com/go-msgqueue/msgqueue)
+- [Golang message task queue](https://github.com/vmihailenco/taskq)
diff --git a/vendor/github.com/go-redis/redis/cluster.go b/vendor/github.com/go-redis/redis/v7/cluster.go
index 0cecc62c4b..1907de6c41 100644
--- a/vendor/github.com/go-redis/redis/cluster.go
+++ b/vendor/github.com/go-redis/redis/v7/cluster.go
@@ -13,10 +13,10 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/hashtag"
-	"github.com/go-redis/redis/internal/pool"
-	"github.com/go-redis/redis/internal/proto"
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/hashtag"
+	"github.com/go-redis/redis/v7/internal/pool"
+	"github.com/go-redis/redis/v7/internal/proto"
 )
 
 var errClusterNoNodes = fmt.Errorf("redis: cluster has no nodes")
@@ -53,8 +53,11 @@ type ClusterOptions struct {
 
 	// Following options are copied from Options struct.
 
+	Dialer func(ctx context.Context, network, addr string) (net.Conn, error)
+
 	OnConnect func(*Conn) error
 
+	Username string
 	Password string
 
 	MaxRetries      int
@@ -65,6 +68,9 @@ type ClusterOptions struct {
 	ReadTimeout  time.Duration
 	WriteTimeout time.Duration
 
+	// NewClient creates a cluster node client with provided name and options.
+	NewClient func(opt *Options) *Client
+
 	// PoolSize applies per cluster node and not for the whole cluster.
 	PoolSize           int
 	MinIdleConns       int
@@ -116,17 +122,23 @@ func (opt *ClusterOptions) init() {
 	case 0:
 		opt.MaxRetryBackoff = 512 * time.Millisecond
 	}
+
+	if opt.NewClient == nil {
+		opt.NewClient = NewClient
+	}
 }
 
 func (opt *ClusterOptions) clientOptions() *Options {
 	const disableIdleCheck = -1
 
 	return &Options{
+		Dialer:    opt.Dialer,
 		OnConnect: opt.OnConnect,
 
 		MaxRetries:      opt.MaxRetries,
 		MinRetryBackoff: opt.MinRetryBackoff,
 		MaxRetryBackoff: opt.MaxRetryBackoff,
+		Username:        opt.Username,
 		Password:        opt.Password,
 		readOnly:        opt.ReadOnly,
 
@@ -152,14 +164,14 @@ type clusterNode struct {
 
 	latency    uint32 // atomic
 	generation uint32 // atomic
-	loading    uint32 // atomic
+	failing    uint32 // atomic
 }
 
 func newClusterNode(clOpt *ClusterOptions, addr string) *clusterNode {
 	opt := clOpt.clientOptions()
 	opt.Addr = addr
 	node := clusterNode{
-		Client: NewClient(opt),
+		Client: clOpt.NewClient(opt),
 	}
 
 	node.latency = math.MaxUint32
@@ -200,21 +212,21 @@ func (n *clusterNode) Latency() time.Duration {
 	return time.Duration(latency) * time.Microsecond
 }
 
-func (n *clusterNode) MarkAsLoading() {
-	atomic.StoreUint32(&n.loading, uint32(time.Now().Unix()))
+func (n *clusterNode) MarkAsFailing() {
+	atomic.StoreUint32(&n.failing, uint32(time.Now().Unix()))
 }
 
-func (n *clusterNode) Loading() bool {
-	const minute = int64(time.Minute / time.Second)
+func (n *clusterNode) Failing() bool {
+	const timeout = 15 // 15 seconds
 
-	loading := atomic.LoadUint32(&n.loading)
-	if loading == 0 {
+	failing := atomic.LoadUint32(&n.failing)
+	if failing == 0 {
 		return false
 	}
-	if time.Now().Unix()-int64(loading) < minute {
+	if time.Now().Unix()-int64(failing) < timeout {
 		return true
 	}
-	atomic.StoreUint32(&n.loading, 0)
+	atomic.StoreUint32(&n.failing, 0)
 	return false
 }
 
@@ -304,6 +316,7 @@ func (c *clusterNodes) NextGeneration() uint32 {
 
 // GC removes unused nodes.
 func (c *clusterNodes) GC(generation uint32) {
+	//nolint:prealloc
 	var collected []*clusterNode
 	c.mu.Lock()
 	for addr, node := range c.allNodes {
@@ -323,20 +336,7 @@ func (c *clusterNodes) GC(generation uint32) {
 }
 
 func (c *clusterNodes) Get(addr string) (*clusterNode, error) {
-	var node *clusterNode
-	var err error
-	c.mu.RLock()
-	if c.closed {
-		err = pool.ErrClosed
-	} else {
-		node = c.allNodes[addr]
-	}
-	c.mu.RUnlock()
-	return node, err
-}
-
-func (c *clusterNodes) GetOrCreate(addr string) (*clusterNode, error) {
-	node, err := c.Get(addr)
+	node, err := c.get(addr)
 	if err != nil {
 		return nil, err
 	}
@@ -365,6 +365,19 @@ func (c *clusterNodes) GetOrCreate(addr string) (*clusterNode, error) {
 	return node, err
 }
 
+func (c *clusterNodes) get(addr string) (*clusterNode, error) {
+	var node *clusterNode
+	var err error
+	c.mu.RLock()
+	if c.closed {
+		err = pool.ErrClosed
+	} else {
+		node = c.allNodes[addr]
+	}
+	c.mu.RUnlock()
+	return node, err
+}
+
 func (c *clusterNodes) All() ([]*clusterNode, error) {
 	c.mu.RLock()
 	defer c.mu.RUnlock()
@@ -387,7 +400,7 @@ func (c *clusterNodes) Random() (*clusterNode, error) {
 	}
 
 	n := rand.Intn(len(addrs))
-	return c.GetOrCreate(addrs[n])
+	return c.Get(addrs[n])
 }
 
 //------------------------------------------------------------------------------
@@ -445,7 +458,7 @@ func newClusterState(
 				addr = replaceLoopbackHost(addr, originHost)
 			}
 
-			node, err := c.nodes.GetOrCreate(addr)
+			node, err := c.nodes.Get(addr)
 			if err != nil {
 				return nil, err
 			}
@@ -519,7 +532,7 @@ func (c *clusterState) slotSlaveNode(slot int) (*clusterNode, error) {
 	case 1:
 		return nodes[0], nil
 	case 2:
-		if slave := nodes[1]; !slave.Loading() {
+		if slave := nodes[1]; !slave.Failing() {
 			return slave, nil
 		}
 		return nodes[0], nil
@@ -528,7 +541,7 @@ func (c *clusterState) slotSlaveNode(slot int) (*clusterNode, error) {
 		for i := 0; i < 10; i++ {
 			n := rand.Intn(len(nodes)-1) + 1
 			slave = nodes[n]
-			if !slave.Loading() {
+			if !slave.Failing() {
 				return slave, nil
 			}
 		}
@@ -548,7 +561,7 @@ func (c *clusterState) slotClosestNode(slot int) (*clusterNode, error) {
 
 	var node *clusterNode
 	for _, n := range nodes {
-		if n.Loading() {
+		if n.Failing() {
 			continue
 		}
 		if node == nil || node.Latency()-n.Latency() > threshold {
@@ -558,10 +571,13 @@ func (c *clusterState) slotClosestNode(slot int) (*clusterNode, error) {
 	return node, nil
 }
 
-func (c *clusterState) slotRandomNode(slot int) *clusterNode {
+func (c *clusterState) slotRandomNode(slot int) (*clusterNode, error) {
 	nodes := c.slotNodes(slot)
+	if len(nodes) == 0 {
+		return c.nodes.Random()
+	}
 	n := rand.Intn(len(nodes))
-	return nodes[n]
+	return nodes[n], nil
 }
 
 func (c *clusterState) slotNodes(slot int) []*clusterNode {
@@ -639,22 +655,21 @@ func (c *clusterStateHolder) ReloadOrGet() (*clusterState, error) {
 
 //------------------------------------------------------------------------------
 
+type clusterClient struct {
+	opt           *ClusterOptions
+	nodes         *clusterNodes
+	state         *clusterStateHolder //nolint:structcheck
+	cmdsInfoCache *cmdsInfoCache      //nolint:structcheck
+}
+
 // ClusterClient is a Redis Cluster client representing a pool of zero
 // or more underlying connections. It's safe for concurrent use by
 // multiple goroutines.
 type ClusterClient struct {
+	*clusterClient
 	cmdable
-
+	hooks
 	ctx context.Context
-
-	opt           *ClusterOptions
-	nodes         *clusterNodes
-	state         *clusterStateHolder
-	cmdsInfoCache *cmdsInfoCache
-
-	process           func(Cmder) error
-	processPipeline   func([]Cmder) error
-	processTxPipeline func([]Cmder) error
 }
 
 // NewClusterClient returns a Redis Cluster client as described in
@@ -663,17 +678,16 @@ func NewClusterClient(opt *ClusterOptions) *ClusterClient {
 	opt.init()
 
 	c := &ClusterClient{
-		opt:   opt,
-		nodes: newClusterNodes(opt),
+		clusterClient: &clusterClient{
+			opt:   opt,
+			nodes: newClusterNodes(opt),
+		},
+		ctx: context.Background(),
 	}
 	c.state = newClusterStateHolder(c.loadState)
 	c.cmdsInfoCache = newCmdsInfoCache(c.cmdsInfo)
+	c.cmdable = c.Process
 
-	c.process = c.defaultProcess
-	c.processPipeline = c.defaultProcessPipeline
-	c.processTxPipeline = c.defaultProcessTxPipeline
-
-	c.init()
 	if opt.IdleCheckFrequency > 0 {
 		go c.reaper(opt.IdleCheckFrequency)
 	}
@@ -681,37 +695,19 @@ func NewClusterClient(opt *ClusterOptions) *ClusterClient {
 	return c
 }
 
-func (c *ClusterClient) init() {
-	c.cmdable.setProcessor(c.Process)
-}
-
-// ReloadState reloads cluster state. If available it calls ClusterSlots func
-// to get cluster slots information.
-func (c *ClusterClient) ReloadState() error {
-	_, err := c.state.Reload()
-	return err
-}
-
 func (c *ClusterClient) Context() context.Context {
-	if c.ctx != nil {
-		return c.ctx
-	}
-	return context.Background()
+	return c.ctx
 }
 
 func (c *ClusterClient) WithContext(ctx context.Context) *ClusterClient {
 	if ctx == nil {
 		panic("nil context")
 	}
-	c2 := c.copy()
-	c2.ctx = ctx
-	return c2
-}
-
-func (c *ClusterClient) copy() *ClusterClient {
-	cp := *c
-	cp.init()
-	return &cp
+	clone := *c
+	clone.cmdable = clone.Process
+	clone.hooks.lock()
+	clone.ctx = ctx
+	return &clone
 }
 
 // Options returns read-only Options that were used to create the client.
@@ -719,164 +715,10 @@ func (c *ClusterClient) Options() *ClusterOptions {
 	return c.opt
 }
 
-func (c *ClusterClient) retryBackoff(attempt int) time.Duration {
-	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
-}
-
-func (c *ClusterClient) cmdsInfo() (map[string]*CommandInfo, error) {
-	addrs, err := c.nodes.Addrs()
-	if err != nil {
-		return nil, err
-	}
-
-	var firstErr error
-	for _, addr := range addrs {
-		node, err := c.nodes.Get(addr)
-		if err != nil {
-			return nil, err
-		}
-		if node == nil {
-			continue
-		}
-
-		info, err := node.Client.Command().Result()
-		if err == nil {
-			return info, nil
-		}
-		if firstErr == nil {
-			firstErr = err
-		}
-	}
-	return nil, firstErr
-}
-
-func (c *ClusterClient) cmdInfo(name string) *CommandInfo {
-	cmdsInfo, err := c.cmdsInfoCache.Get()
-	if err != nil {
-		return nil
-	}
-
-	info := cmdsInfo[name]
-	if info == nil {
-		internal.Logf("info for cmd=%s not found", name)
-	}
-	return info
-}
-
-func cmdSlot(cmd Cmder, pos int) int {
-	if pos == 0 {
-		return hashtag.RandomSlot()
-	}
-	firstKey := cmd.stringArg(pos)
-	return hashtag.Slot(firstKey)
-}
-
-func (c *ClusterClient) cmdSlot(cmd Cmder) int {
-	args := cmd.Args()
-	if args[0] == "cluster" && args[1] == "getkeysinslot" {
-		return args[2].(int)
-	}
-
-	cmdInfo := c.cmdInfo(cmd.Name())
-	return cmdSlot(cmd, cmdFirstKeyPos(cmd, cmdInfo))
-}
-
-func (c *ClusterClient) cmdSlotAndNode(cmd Cmder) (int, *clusterNode, error) {
-	state, err := c.state.Get()
-	if err != nil {
-		return 0, nil, err
-	}
-
-	cmdInfo := c.cmdInfo(cmd.Name())
-	slot := c.cmdSlot(cmd)
-
-	if c.opt.ReadOnly && cmdInfo != nil && cmdInfo.ReadOnly {
-		if c.opt.RouteByLatency {
-			node, err := state.slotClosestNode(slot)
-			return slot, node, err
-		}
-
-		if c.opt.RouteRandomly {
-			node := state.slotRandomNode(slot)
-			return slot, node, nil
-		}
-
-		node, err := state.slotSlaveNode(slot)
-		return slot, node, err
-	}
-
-	node, err := state.slotMasterNode(slot)
-	return slot, node, err
-}
-
-func (c *ClusterClient) slotMasterNode(slot int) (*clusterNode, error) {
-	state, err := c.state.Get()
-	if err != nil {
-		return nil, err
-	}
-
-	nodes := state.slotNodes(slot)
-	if len(nodes) > 0 {
-		return nodes[0], nil
-	}
-	return c.nodes.Random()
-}
-
-func (c *ClusterClient) Watch(fn func(*Tx) error, keys ...string) error {
-	if len(keys) == 0 {
-		return fmt.Errorf("redis: Watch requires at least one key")
-	}
-
-	slot := hashtag.Slot(keys[0])
-	for _, key := range keys[1:] {
-		if hashtag.Slot(key) != slot {
-			err := fmt.Errorf("redis: Watch requires all keys to be in the same slot")
-			return err
-		}
-	}
-
-	node, err := c.slotMasterNode(slot)
-	if err != nil {
-		return err
-	}
-
-	for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ {
-		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
-		}
-
-		err = node.Client.Watch(fn, keys...)
-		if err == nil {
-			break
-		}
-		if err != Nil {
-			c.state.LazyReload()
-		}
-
-		moved, ask, addr := internal.IsMovedError(err)
-		if moved || ask {
-			node, err = c.nodes.GetOrCreate(addr)
-			if err != nil {
-				return err
-			}
-			continue
-		}
-
-		if err == pool.ErrClosed || internal.IsReadOnlyError(err) {
-			node, err = c.slotMasterNode(slot)
-			if err != nil {
-				return err
-			}
-			continue
-		}
-
-		if internal.IsRetryableError(err, true) {
-			continue
-		}
-
-		return err
-	}
-
+// ReloadState reloads cluster state. If available it calls ClusterSlots func
+// to get cluster slots information.
+func (c *ClusterClient) ReloadState() error {
+	_, err := c.state.Reload()
 	return err
 }
 
@@ -890,99 +732,111 @@ func (c *ClusterClient) Close() error {
 
 // Do creates a Cmd from the args and processes the cmd.
 func (c *ClusterClient) Do(args ...interface{}) *Cmd {
+	return c.DoContext(c.ctx, args...)
+}
+
+func (c *ClusterClient) DoContext(ctx context.Context, args ...interface{}) *Cmd {
 	cmd := NewCmd(args...)
-	c.Process(cmd)
+	_ = c.ProcessContext(ctx, cmd)
 	return cmd
 }
 
-func (c *ClusterClient) WrapProcess(
-	fn func(oldProcess func(Cmder) error) func(Cmder) error,
-) {
-	c.process = fn(c.process)
+func (c *ClusterClient) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
 }
 
-func (c *ClusterClient) Process(cmd Cmder) error {
-	return c.process(cmd)
+func (c *ClusterClient) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.hooks.process(ctx, cmd, c.process)
 }
 
-func (c *ClusterClient) defaultProcess(cmd Cmder) error {
+func (c *ClusterClient) process(ctx context.Context, cmd Cmder) error {
+	err := c._process(ctx, cmd)
+	if err != nil {
+		cmd.SetErr(err)
+		return err
+	}
+	return nil
+}
+
+func (c *ClusterClient) _process(ctx context.Context, cmd Cmder) error {
+	cmdInfo := c.cmdInfo(cmd.Name())
+	slot := c.cmdSlot(cmd)
+
 	var node *clusterNode
 	var ask bool
+	var lastErr error
 	for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ {
 		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
 		}
 
 		if node == nil {
 			var err error
-			_, node, err = c.cmdSlotAndNode(cmd)
+			node, err = c.cmdNode(cmdInfo, slot)
 			if err != nil {
-				cmd.setErr(err)
-				break
+				return err
 			}
 		}
 
-		var err error
 		if ask {
 			pipe := node.Client.Pipeline()
-			_ = pipe.Process(NewCmd("ASKING"))
+			_ = pipe.Process(NewCmd("asking"))
 			_ = pipe.Process(cmd)
-			_, err = pipe.Exec()
+			_, lastErr = pipe.ExecContext(ctx)
 			_ = pipe.Close()
 			ask = false
 		} else {
-			err = node.Client.Process(cmd)
+			lastErr = node.Client.ProcessContext(ctx, cmd)
 		}
 
 		// If there is no error - we are done.
-		if err == nil {
-			break
+		if lastErr == nil {
+			return nil
 		}
-		if err != Nil {
+		if lastErr != Nil {
 			c.state.LazyReload()
 		}
+		if lastErr == pool.ErrClosed || isReadOnlyError(lastErr) {
+			node = nil
+			continue
+		}
 
 		// If slave is loading - pick another node.
-		if c.opt.ReadOnly && internal.IsLoadingError(err) {
-			node.MarkAsLoading()
+		if c.opt.ReadOnly && isLoadingError(lastErr) {
+			node.MarkAsFailing()
 			node = nil
 			continue
 		}
 
 		var moved bool
 		var addr string
-		moved, ask, addr = internal.IsMovedError(err)
+		moved, ask, addr = isMovedError(lastErr)
 		if moved || ask {
-			node, err = c.nodes.GetOrCreate(addr)
+			var err error
+			node, err = c.nodes.Get(addr)
 			if err != nil {
-				break
+				return err
 			}
 			continue
 		}
 
-		if err == pool.ErrClosed || internal.IsReadOnlyError(err) {
-			node = nil
-			continue
-		}
-
-		if internal.IsRetryableError(err, true) {
+		if isRetryableError(lastErr, cmd.readTimeout() == nil) {
 			// First retry the same node.
 			if attempt == 0 {
 				continue
 			}
 
-			// Second try random node.
-			node, err = c.nodes.Random()
-			if err != nil {
-				break
-			}
+			// Second try another node.
+			node.MarkAsFailing()
+			node = nil
 			continue
 		}
 
-		break
+		return lastErr
 	}
-
-	return cmd.Err()
+	return lastErr
 }
 
 // ForEachMaster concurrently calls the fn on each master node in the cluster.
@@ -995,6 +849,7 @@ func (c *ClusterClient) ForEachMaster(fn func(client *Client) error) error {
 
 	var wg sync.WaitGroup
 	errCh := make(chan error, 1)
+
 	for _, master := range state.Masters {
 		wg.Add(1)
 		go func(node *clusterNode) {
@@ -1008,6 +863,7 @@ func (c *ClusterClient) ForEachMaster(fn func(client *Client) error) error {
 			}
 		}(master)
 	}
+
 	wg.Wait()
 
 	select {
@@ -1028,6 +884,7 @@ func (c *ClusterClient) ForEachSlave(fn func(client *Client) error) error {
 
 	var wg sync.WaitGroup
 	errCh := make(chan error, 1)
+
 	for _, slave := range state.Slaves {
 		wg.Add(1)
 		go func(node *clusterNode) {
@@ -1041,6 +898,7 @@ func (c *ClusterClient) ForEachSlave(fn func(client *Client) error) error {
 			}
 		}(slave)
 	}
+
 	wg.Wait()
 
 	select {
@@ -1061,6 +919,7 @@ func (c *ClusterClient) ForEachNode(fn func(client *Client) error) error {
 
 	var wg sync.WaitGroup
 	errCh := make(chan error, 1)
+
 	worker := func(node *clusterNode) {
 		defer wg.Done()
 		err := fn(node.Client)
@@ -1082,6 +941,7 @@ func (c *ClusterClient) ForEachNode(fn func(client *Client) error) error {
 	}
 
 	wg.Wait()
+
 	select {
 	case err := <-errCh:
 		return err
@@ -1140,7 +1000,7 @@ func (c *ClusterClient) loadState() (*clusterState, error) {
 
 	var firstErr error
 	for _, addr := range addrs {
-		node, err := c.nodes.GetOrCreate(addr)
+		node, err := c.nodes.Get(addr)
 		if err != nil {
 			if firstErr == nil {
 				firstErr = err
@@ -1176,7 +1036,7 @@ func (c *ClusterClient) reaper(idleCheckFrequency time.Duration) {
 		for _, node := range nodes {
 			_, err := node.Client.connPool.(*pool.ConnPool).ReapStaleConns()
 			if err != nil {
-				internal.Logf("ReapStaleConns failed: %s", err)
+				internal.Logger.Printf("ReapStaleConns failed: %s", err)
 			}
 		}
 	}
@@ -1184,9 +1044,10 @@ func (c *ClusterClient) reaper(idleCheckFrequency time.Duration) {
 
 func (c *ClusterClient) Pipeline() Pipeliner {
 	pipe := Pipeline{
+		ctx:  c.ctx,
 		exec: c.processPipeline,
 	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
+	pipe.init()
 	return &pipe
 }
 
@@ -1194,15 +1055,13 @@ func (c *ClusterClient) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	return c.Pipeline().Pipelined(fn)
 }
 
-func (c *ClusterClient) WrapProcessPipeline(
-	fn func(oldProcess func([]Cmder) error) func([]Cmder) error,
-) {
-	c.processPipeline = fn(c.processPipeline)
+func (c *ClusterClient) processPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processPipeline(ctx, cmds, c._processPipeline)
 }
 
-func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
+func (c *ClusterClient) _processPipeline(ctx context.Context, cmds []Cmder) error {
 	cmdsMap := newCmdsMap()
-	err := c.mapCmdsByNode(cmds, cmdsMap)
+	err := c.mapCmdsByNode(cmdsMap, cmds)
 	if err != nil {
 		setCmdsErr(cmds, err)
 		return err
@@ -1210,7 +1069,10 @@ func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
 
 	for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ {
 		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				setCmdsErr(cmds, err)
+				return err
+			}
 		}
 
 		failedCmds := newCmdsMap()
@@ -1221,18 +1083,17 @@ func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
 			go func(node *clusterNode, cmds []Cmder) {
 				defer wg.Done()
 
-				cn, err := node.Client.getConn()
-				if err != nil {
-					if err == pool.ErrClosed {
-						c.mapCmdsByNode(cmds, failedCmds)
-					} else {
+				err := c._processPipelineNode(ctx, node, cmds, failedCmds)
+				if err == nil {
+					return
+				}
+				if attempt < c.opt.MaxRedirects {
+					if err := c.mapCmdsByNode(failedCmds, cmds); err != nil {
 						setCmdsErr(cmds, err)
 					}
-					return
+				} else {
+					setCmdsErr(cmds, err)
 				}
-
-				err = c.pipelineProcessCmds(node, cn, cmds, failedCmds)
-				node.Client.releaseConnStrict(cn, err)
 			}(node, cmds)
 		}
 
@@ -1246,40 +1107,31 @@ func (c *ClusterClient) defaultProcessPipeline(cmds []Cmder) error {
 	return cmdsFirstErr(cmds)
 }
 
-type cmdsMap struct {
-	mu sync.Mutex
-	m  map[*clusterNode][]Cmder
-}
-
-func newCmdsMap() *cmdsMap {
-	return &cmdsMap{
-		m: make(map[*clusterNode][]Cmder),
-	}
-}
-
-func (c *ClusterClient) mapCmdsByNode(cmds []Cmder, cmdsMap *cmdsMap) error {
+func (c *ClusterClient) mapCmdsByNode(cmdsMap *cmdsMap, cmds []Cmder) error {
 	state, err := c.state.Get()
 	if err != nil {
-		setCmdsErr(cmds, err)
 		return err
 	}
 
-	cmdsAreReadOnly := c.cmdsAreReadOnly(cmds)
-	for _, cmd := range cmds {
-		var node *clusterNode
-		var err error
-		if cmdsAreReadOnly {
-			_, node, err = c.cmdSlotAndNode(cmd)
-		} else {
+	if c.opt.ReadOnly && c.cmdsAreReadOnly(cmds) {
+		for _, cmd := range cmds {
 			slot := c.cmdSlot(cmd)
-			node, err = state.slotMasterNode(slot)
+			node, err := c.slotReadOnlyNode(state, slot)
+			if err != nil {
+				return err
+			}
+			cmdsMap.Add(node, cmd)
 		}
+		return nil
+	}
+
+	for _, cmd := range cmds {
+		slot := c.cmdSlot(cmd)
+		node, err := state.slotMasterNode(slot)
 		if err != nil {
 			return err
 		}
-		cmdsMap.mu.Lock()
-		cmdsMap.m[node] = append(cmdsMap.m[node], cmd)
-		cmdsMap.mu.Unlock()
+		cmdsMap.Add(node, cmd)
 	}
 	return nil
 }
@@ -1294,94 +1146,83 @@ func (c *ClusterClient) cmdsAreReadOnly(cmds []Cmder) bool {
 	return true
 }
 
-func (c *ClusterClient) pipelineProcessCmds(
-	node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap,
+func (c *ClusterClient) _processPipelineNode(
+	ctx context.Context, node *clusterNode, cmds []Cmder, failedCmds *cmdsMap,
 ) error {
-	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-		return writeCmd(wr, cmds...)
-	})
-	if err != nil {
-		setCmdsErr(cmds, err)
-		failedCmds.mu.Lock()
-		failedCmds.m[node] = cmds
-		failedCmds.mu.Unlock()
-		return err
-	}
+	return node.Client.hooks.processPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		return node.Client.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+			err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
+				return writeCmds(wr, cmds)
+			})
+			if err != nil {
+				return err
+			}
 
-	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-		return c.pipelineReadCmds(node, rd, cmds, failedCmds)
+			return cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
+				return c.pipelineReadCmds(node, rd, cmds, failedCmds)
+			})
+		})
 	})
-	return err
 }
 
 func (c *ClusterClient) pipelineReadCmds(
 	node *clusterNode, rd *proto.Reader, cmds []Cmder, failedCmds *cmdsMap,
 ) error {
-	var firstErr error
 	for _, cmd := range cmds {
 		err := cmd.readReply(rd)
 		if err == nil {
 			continue
 		}
-
 		if c.checkMovedErr(cmd, err, failedCmds) {
 			continue
 		}
 
-		if internal.IsRedisError(err) {
-			continue
+		if c.opt.ReadOnly && isLoadingError(err) {
+			node.MarkAsFailing()
+			return err
 		}
-
-		failedCmds.mu.Lock()
-		failedCmds.m[node] = append(failedCmds.m[node], cmd)
-		failedCmds.mu.Unlock()
-		if firstErr == nil {
-			firstErr = err
+		if isRedisError(err) {
+			continue
 		}
+		return err
 	}
-	return firstErr
+	return nil
 }
 
 func (c *ClusterClient) checkMovedErr(
 	cmd Cmder, err error, failedCmds *cmdsMap,
 ) bool {
-	moved, ask, addr := internal.IsMovedError(err)
+	moved, ask, addr := isMovedError(err)
+	if !moved && !ask {
+		return false
+	}
+
+	node, err := c.nodes.Get(addr)
+	if err != nil {
+		return false
+	}
 
 	if moved {
 		c.state.LazyReload()
-
-		node, err := c.nodes.GetOrCreate(addr)
-		if err != nil {
-			return false
-		}
-
-		failedCmds.mu.Lock()
-		failedCmds.m[node] = append(failedCmds.m[node], cmd)
-		failedCmds.mu.Unlock()
+		failedCmds.Add(node, cmd)
 		return true
 	}
 
 	if ask {
-		node, err := c.nodes.GetOrCreate(addr)
-		if err != nil {
-			return false
-		}
-
-		failedCmds.mu.Lock()
-		failedCmds.m[node] = append(failedCmds.m[node], NewCmd("ASKING"), cmd)
-		failedCmds.mu.Unlock()
+		failedCmds.Add(node, NewCmd("asking"), cmd)
 		return true
 	}
 
-	return false
+	panic("not reached")
 }
 
 // TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
 func (c *ClusterClient) TxPipeline() Pipeliner {
 	pipe := Pipeline{
+		ctx:  c.ctx,
 		exec: c.processTxPipeline,
 	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
+	pipe.init()
 	return &pipe
 }
 
@@ -1389,9 +1230,14 @@ func (c *ClusterClient) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	return c.TxPipeline().Pipelined(fn)
 }
 
-func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error {
+func (c *ClusterClient) processTxPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processPipeline(ctx, cmds, c._processTxPipeline)
+}
+
+func (c *ClusterClient) _processTxPipeline(ctx context.Context, cmds []Cmder) error {
 	state, err := c.state.Get()
 	if err != nil {
+		setCmdsErr(cmds, err)
 		return err
 	}
 
@@ -1402,11 +1248,14 @@ func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error {
 			setCmdsErr(cmds, err)
 			continue
 		}
-		cmdsMap := map[*clusterNode][]Cmder{node: cmds}
 
+		cmdsMap := map[*clusterNode][]Cmder{node: cmds}
 		for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ {
 			if attempt > 0 {
-				time.Sleep(c.retryBackoff(attempt))
+				if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+					setCmdsErr(cmds, err)
+					return err
+				}
 			}
 
 			failedCmds := newCmdsMap()
@@ -1417,18 +1266,17 @@ func (c *ClusterClient) defaultProcessTxPipeline(cmds []Cmder) error {
 				go func(node *clusterNode, cmds []Cmder) {
 					defer wg.Done()
 
-					cn, err := node.Client.getConn()
-					if err != nil {
-						if err == pool.ErrClosed {
-							c.mapCmdsByNode(cmds, failedCmds)
-						} else {
+					err := c._processTxPipelineNode(ctx, node, cmds, failedCmds)
+					if err == nil {
+						return
+					}
+					if attempt < c.opt.MaxRedirects {
+						if err := c.mapCmdsByNode(failedCmds, cmds); err != nil {
 							setCmdsErr(cmds, err)
 						}
-						return
+					} else {
+						setCmdsErr(cmds, err)
 					}
-
-					err = c.txPipelineProcessCmds(node, cn, cmds, failedCmds)
-					node.Client.releaseConnStrict(cn, err)
 				}(node, cmds)
 			}
 
@@ -1452,50 +1300,51 @@ func (c *ClusterClient) mapCmdsBySlot(cmds []Cmder) map[int][]Cmder {
 	return cmdsMap
 }
 
-func (c *ClusterClient) txPipelineProcessCmds(
-	node *clusterNode, cn *pool.Conn, cmds []Cmder, failedCmds *cmdsMap,
+func (c *ClusterClient) _processTxPipelineNode(
+	ctx context.Context, node *clusterNode, cmds []Cmder, failedCmds *cmdsMap,
 ) error {
-	err := cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
-		return txPipelineWriteMulti(wr, cmds)
-	})
-	if err != nil {
-		setCmdsErr(cmds, err)
-		failedCmds.mu.Lock()
-		failedCmds.m[node] = cmds
-		failedCmds.mu.Unlock()
-		return err
-	}
+	return node.Client.hooks.processTxPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		return node.Client.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+			err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
+				return writeCmds(wr, cmds)
+			})
+			if err != nil {
+				return err
+			}
 
-	err = cn.WithReader(c.opt.ReadTimeout, func(rd *proto.Reader) error {
-		err := c.txPipelineReadQueued(rd, cmds, failedCmds)
-		if err != nil {
-			setCmdsErr(cmds, err)
-			return err
-		}
-		return pipelineReadCmds(rd, cmds)
+			return cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
+				statusCmd := cmds[0].(*StatusCmd)
+				// Trim multi and exec.
+				cmds = cmds[1 : len(cmds)-1]
+
+				err := c.txPipelineReadQueued(rd, statusCmd, cmds, failedCmds)
+				if err != nil {
+					moved, ask, addr := isMovedError(err)
+					if moved || ask {
+						return c.cmdsMoved(cmds, moved, ask, addr, failedCmds)
+					}
+					return err
+				}
+
+				return pipelineReadCmds(rd, cmds)
+			})
+		})
 	})
-	return err
 }
 
 func (c *ClusterClient) txPipelineReadQueued(
-	rd *proto.Reader, cmds []Cmder, failedCmds *cmdsMap,
+	rd *proto.Reader, statusCmd *StatusCmd, cmds []Cmder, failedCmds *cmdsMap,
 ) error {
 	// Parse queued replies.
-	var statusCmd StatusCmd
 	if err := statusCmd.readReply(rd); err != nil {
 		return err
 	}
 
 	for _, cmd := range cmds {
 		err := statusCmd.readReply(rd)
-		if err == nil {
-			continue
-		}
-
-		if c.checkMovedErr(cmd, err, failedCmds) || internal.IsRedisError(err) {
+		if err == nil || c.checkMovedErr(cmd, err, failedCmds) || isRedisError(err) {
 			continue
 		}
-
 		return err
 	}
 
@@ -1510,23 +1359,106 @@ func (c *ClusterClient) txPipelineReadQueued(
 
 	switch line[0] {
 	case proto.ErrorReply:
-		err := proto.ParseErrorReply(line)
-		for _, cmd := range cmds {
-			if !c.checkMovedErr(cmd, err, failedCmds) {
-				break
-			}
-		}
-		return err
+		return proto.ParseErrorReply(line)
 	case proto.ArrayReply:
 		// ok
 	default:
-		err := fmt.Errorf("redis: expected '*', but got line %q", line)
+		return fmt.Errorf("redis: expected '*', but got line %q", line)
+	}
+
+	return nil
+}
+
+func (c *ClusterClient) cmdsMoved(
+	cmds []Cmder, moved, ask bool, addr string, failedCmds *cmdsMap,
+) error {
+	node, err := c.nodes.Get(addr)
+	if err != nil {
 		return err
 	}
 
+	if moved {
+		c.state.LazyReload()
+		for _, cmd := range cmds {
+			failedCmds.Add(node, cmd)
+		}
+		return nil
+	}
+
+	if ask {
+		for _, cmd := range cmds {
+			failedCmds.Add(node, NewCmd("asking"), cmd)
+		}
+		return nil
+	}
+
 	return nil
 }
 
+func (c *ClusterClient) Watch(fn func(*Tx) error, keys ...string) error {
+	return c.WatchContext(c.ctx, fn, keys...)
+}
+
+func (c *ClusterClient) WatchContext(ctx context.Context, fn func(*Tx) error, keys ...string) error {
+	if len(keys) == 0 {
+		return fmt.Errorf("redis: Watch requires at least one key")
+	}
+
+	slot := hashtag.Slot(keys[0])
+	for _, key := range keys[1:] {
+		if hashtag.Slot(key) != slot {
+			err := fmt.Errorf("redis: Watch requires all keys to be in the same slot")
+			return err
+		}
+	}
+
+	node, err := c.slotMasterNode(slot)
+	if err != nil {
+		return err
+	}
+
+	for attempt := 0; attempt <= c.opt.MaxRedirects; attempt++ {
+		if attempt > 0 {
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
+		}
+
+		err = node.Client.WatchContext(ctx, fn, keys...)
+		if err == nil {
+			break
+		}
+		if err != Nil {
+			c.state.LazyReload()
+		}
+
+		moved, ask, addr := isMovedError(err)
+		if moved || ask {
+			node, err = c.nodes.Get(addr)
+			if err != nil {
+				return err
+			}
+			continue
+		}
+
+		if err == pool.ErrClosed || isReadOnlyError(err) {
+			node, err = c.slotMasterNode(slot)
+			if err != nil {
+				return err
+			}
+			continue
+		}
+
+		if isRetryableError(err, true) {
+			continue
+		}
+
+		return err
+	}
+
+	return err
+}
+
 func (c *ClusterClient) pubSub() *PubSub {
 	var node *clusterNode
 	pubsub := &PubSub{
@@ -1537,16 +1469,21 @@ func (c *ClusterClient) pubSub() *PubSub {
 				panic("node != nil")
 			}
 
-			slot := hashtag.Slot(channels[0])
-
 			var err error
-			node, err = c.slotMasterNode(slot)
+			if len(channels) > 0 {
+				slot := hashtag.Slot(channels[0])
+				node, err = c.slotMasterNode(slot)
+			} else {
+				node, err = c.nodes.Random()
+			}
 			if err != nil {
 				return nil, err
 			}
 
-			cn, err := node.Client.newConn()
+			cn, err := node.Client.newConn(context.TODO())
 			if err != nil {
+				node = nil
+
 				return nil, err
 			}
 
@@ -1583,6 +1520,98 @@ func (c *ClusterClient) PSubscribe(channels ...string) *PubSub {
 	return pubsub
 }
 
+func (c *ClusterClient) retryBackoff(attempt int) time.Duration {
+	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
+}
+
+func (c *ClusterClient) cmdsInfo() (map[string]*CommandInfo, error) {
+	addrs, err := c.nodes.Addrs()
+	if err != nil {
+		return nil, err
+	}
+
+	var firstErr error
+	for _, addr := range addrs {
+		node, err := c.nodes.Get(addr)
+		if err != nil {
+			return nil, err
+		}
+		if node == nil {
+			continue
+		}
+
+		info, err := node.Client.Command().Result()
+		if err == nil {
+			return info, nil
+		}
+		if firstErr == nil {
+			firstErr = err
+		}
+	}
+	return nil, firstErr
+}
+
+func (c *ClusterClient) cmdInfo(name string) *CommandInfo {
+	cmdsInfo, err := c.cmdsInfoCache.Get()
+	if err != nil {
+		return nil
+	}
+
+	info := cmdsInfo[name]
+	if info == nil {
+		internal.Logger.Printf("info for cmd=%s not found", name)
+	}
+	return info
+}
+
+func (c *ClusterClient) cmdSlot(cmd Cmder) int {
+	args := cmd.Args()
+	if args[0] == "cluster" && args[1] == "getkeysinslot" {
+		return args[2].(int)
+	}
+
+	cmdInfo := c.cmdInfo(cmd.Name())
+	return cmdSlot(cmd, cmdFirstKeyPos(cmd, cmdInfo))
+}
+
+func cmdSlot(cmd Cmder, pos int) int {
+	if pos == 0 {
+		return hashtag.RandomSlot()
+	}
+	firstKey := cmd.stringArg(pos)
+	return hashtag.Slot(firstKey)
+}
+
+func (c *ClusterClient) cmdNode(cmdInfo *CommandInfo, slot int) (*clusterNode, error) {
+	state, err := c.state.Get()
+	if err != nil {
+		return nil, err
+	}
+
+	if c.opt.ReadOnly && cmdInfo != nil && cmdInfo.ReadOnly {
+		return c.slotReadOnlyNode(state, slot)
+	}
+	return state.slotMasterNode(slot)
+}
+
+func (c *clusterClient) slotReadOnlyNode(state *clusterState, slot int) (*clusterNode, error) {
+	if c.opt.RouteByLatency {
+		return state.slotClosestNode(slot)
+	}
+	if c.opt.RouteRandomly {
+		return state.slotRandomNode(slot)
+	}
+	return state.slotSlaveNode(slot)
+}
+
+func (c *ClusterClient) slotMasterNode(slot int) (*clusterNode, error) {
+	state, err := c.state.Get()
+	if err != nil {
+		return nil, err
+	}
+	return state.slotMasterNode(slot)
+}
+
 func appendUniqueNode(nodes []*clusterNode, node *clusterNode) []*clusterNode {
 	for _, n := range nodes {
 		if n == node {
@@ -1619,3 +1648,22 @@ func remove(ss []string, es ...string) []string {
 	}
 	return ss
 }
+
+//------------------------------------------------------------------------------
+
+type cmdsMap struct {
+	mu sync.Mutex
+	m  map[*clusterNode][]Cmder
+}
+
+func newCmdsMap() *cmdsMap {
+	return &cmdsMap{
+		m: make(map[*clusterNode][]Cmder),
+	}
+}
+
+func (m *cmdsMap) Add(node *clusterNode, cmds ...Cmder) {
+	m.mu.Lock()
+	m.m[node] = append(m.m[node], cmds...)
+	m.mu.Unlock()
+}
diff --git a/vendor/github.com/go-redis/redis/cluster_commands.go b/vendor/github.com/go-redis/redis/v7/cluster_commands.go
index dff62c902d..c9b9b9de24 100644
--- a/vendor/github.com/go-redis/redis/cluster_commands.go
+++ b/vendor/github.com/go-redis/redis/v7/cluster_commands.go
@@ -14,7 +14,7 @@ func (c *ClusterClient) DBSize() *IntCmd {
 		return nil
 	})
 	if err != nil {
-		cmd.setErr(err)
+		cmd.SetErr(err)
 		return cmd
 	}
 	cmd.val = size
diff --git a/vendor/github.com/go-redis/redis/command.go b/vendor/github.com/go-redis/redis/v7/command.go
index cb4f94b122..dd7fe4a91e 100644
--- a/vendor/github.com/go-redis/redis/command.go
+++ b/vendor/github.com/go-redis/redis/v7/command.go
@@ -7,27 +7,28 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/proto"
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/proto"
+	"github.com/go-redis/redis/v7/internal/util"
 )
 
 type Cmder interface {
 	Name() string
 	Args() []interface{}
+	String() string
 	stringArg(int) string
 
-	readReply(rd *proto.Reader) error
-	setErr(error)
-
 	readTimeout() *time.Duration
+	readReply(rd *proto.Reader) error
 
+	SetErr(error)
 	Err() error
 }
 
 func setCmdsErr(cmds []Cmder, e error) {
 	for _, cmd := range cmds {
 		if cmd.Err() == nil {
-			cmd.setErr(e)
+			cmd.SetErr(e)
 		}
 	}
 }
@@ -41,18 +42,21 @@ func cmdsFirstErr(cmds []Cmder) error {
 	return nil
 }
 
-func writeCmd(wr *proto.Writer, cmds ...Cmder) error {
+func writeCmds(wr *proto.Writer, cmds []Cmder) error {
 	for _, cmd := range cmds {
-		err := wr.WriteArgs(cmd.Args())
-		if err != nil {
+		if err := writeCmd(wr, cmd); err != nil {
 			return err
 		}
 	}
 	return nil
 }
 
+func writeCmd(wr *proto.Writer, cmd Cmder) error {
+	return wr.WriteArgs(cmd.Args())
+}
+
 func cmdString(cmd Cmder, val interface{}) string {
-	var ss []string
+	ss := make([]string, 0, len(cmd.Args()))
 	for _, arg := range cmd.Args() {
 		ss = append(ss, fmt.Sprint(arg))
 	}
@@ -69,7 +73,6 @@ func cmdString(cmd Cmder, val interface{}) string {
 		}
 	}
 	return s
-
 }
 
 func cmdFirstKeyPos(cmd Cmder, info *CommandInfo) int {
@@ -92,38 +95,40 @@ func cmdFirstKeyPos(cmd Cmder, info *CommandInfo) int {
 //------------------------------------------------------------------------------
 
 type baseCmd struct {
-	_args []interface{}
-	err   error
+	args []interface{}
+	err  error
 
 	_readTimeout *time.Duration
 }
 
 var _ Cmder = (*Cmd)(nil)
 
-func (cmd *baseCmd) Err() error {
-	return cmd.err
+func (cmd *baseCmd) Name() string {
+	if len(cmd.args) == 0 {
+		return ""
+	}
+	// Cmd name must be lower cased.
+	return internal.ToLower(cmd.stringArg(0))
 }
 
 func (cmd *baseCmd) Args() []interface{} {
-	return cmd._args
+	return cmd.args
 }
 
 func (cmd *baseCmd) stringArg(pos int) string {
-	if pos < 0 || pos >= len(cmd._args) {
+	if pos < 0 || pos >= len(cmd.args) {
 		return ""
 	}
-	s, _ := cmd._args[pos].(string)
+	s, _ := cmd.args[pos].(string)
 	return s
 }
 
-func (cmd *baseCmd) Name() string {
-	if len(cmd._args) > 0 {
-		// Cmd name must be lower cased.
-		s := internal.ToLower(cmd.stringArg(0))
-		cmd._args[0] = s
-		return s
-	}
-	return ""
+func (cmd *baseCmd) SetErr(e error) {
+	cmd.err = e
+}
+
+func (cmd *baseCmd) Err() error {
+	return cmd.err
 }
 
 func (cmd *baseCmd) readTimeout() *time.Duration {
@@ -134,10 +139,6 @@ func (cmd *baseCmd) setReadTimeout(d time.Duration) {
 	cmd._readTimeout = &d
 }
 
-func (cmd *baseCmd) setErr(e error) {
-	cmd.err = e
-}
-
 //------------------------------------------------------------------------------
 
 type Cmd struct {
@@ -148,10 +149,14 @@ type Cmd struct {
 
 func NewCmd(args ...interface{}) *Cmd {
 	return &Cmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
+func (cmd *Cmd) String() string {
+	return cmdString(cmd, cmd.val)
+}
+
 func (cmd *Cmd) Val() interface{} {
 	return cmd.val
 }
@@ -160,7 +165,7 @@ func (cmd *Cmd) Result() (interface{}, error) {
 	return cmd.val, cmd.err
 }
 
-func (cmd *Cmd) String() (string, error) {
+func (cmd *Cmd) Text() (string, error) {
 	if cmd.err != nil {
 		return "", cmd.err
 	}
@@ -218,6 +223,25 @@ func (cmd *Cmd) Uint64() (uint64, error) {
 	}
 }
 
+func (cmd *Cmd) Float32() (float32, error) {
+	if cmd.err != nil {
+		return 0, cmd.err
+	}
+	switch val := cmd.val.(type) {
+	case int64:
+		return float32(val), nil
+	case string:
+		f, err := strconv.ParseFloat(val, 32)
+		if err != nil {
+			return 0, err
+		}
+		return float32(f), nil
+	default:
+		err := fmt.Errorf("redis: unexpected type=%T for Float32", val)
+		return 0, err
+	}
+}
+
 func (cmd *Cmd) Float64() (float64, error) {
 	if cmd.err != nil {
 		return 0, cmd.err
@@ -255,27 +279,21 @@ func (cmd *Cmd) readReply(rd *proto.Reader) error {
 
 // Implements proto.MultiBulkParse
 func sliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	vals := make([]interface{}, 0, n)
-	for i := int64(0); i < n; i++ {
+	vals := make([]interface{}, n)
+	for i := 0; i < len(vals); i++ {
 		v, err := rd.ReadReply(sliceParser)
 		if err != nil {
 			if err == Nil {
-				vals = append(vals, nil)
+				vals[i] = nil
 				continue
 			}
 			if err, ok := err.(proto.RedisError); ok {
-				vals = append(vals, err)
+				vals[i] = err
 				continue
 			}
 			return nil, err
 		}
-
-		switch v := v.(type) {
-		case string:
-			vals = append(vals, v)
-		default:
-			vals = append(vals, v)
-		}
+		vals[i] = v
 	}
 	return vals, nil
 }
@@ -292,7 +310,7 @@ var _ Cmder = (*SliceCmd)(nil)
 
 func NewSliceCmd(args ...interface{}) *SliceCmd {
 	return &SliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -330,7 +348,7 @@ var _ Cmder = (*StatusCmd)(nil)
 
 func NewStatusCmd(args ...interface{}) *StatusCmd {
 	return &StatusCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -363,7 +381,7 @@ var _ Cmder = (*IntCmd)(nil)
 
 func NewIntCmd(args ...interface{}) *IntCmd {
 	return &IntCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -375,6 +393,10 @@ func (cmd *IntCmd) Result() (int64, error) {
 	return cmd.val, cmd.err
 }
 
+func (cmd *IntCmd) Uint64() (uint64, error) {
+	return uint64(cmd.val), cmd.err
+}
+
 func (cmd *IntCmd) String() string {
 	return cmdString(cmd, cmd.val)
 }
@@ -386,6 +408,49 @@ func (cmd *IntCmd) readReply(rd *proto.Reader) error {
 
 //------------------------------------------------------------------------------
 
+type IntSliceCmd struct {
+	baseCmd
+
+	val []int64
+}
+
+var _ Cmder = (*IntSliceCmd)(nil)
+
+func NewIntSliceCmd(args ...interface{}) *IntSliceCmd {
+	return &IntSliceCmd{
+		baseCmd: baseCmd{args: args},
+	}
+}
+
+func (cmd *IntSliceCmd) Val() []int64 {
+	return cmd.val
+}
+
+func (cmd *IntSliceCmd) Result() ([]int64, error) {
+	return cmd.val, cmd.err
+}
+
+func (cmd *IntSliceCmd) String() string {
+	return cmdString(cmd, cmd.val)
+}
+
+func (cmd *IntSliceCmd) readReply(rd *proto.Reader) error {
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]int64, n)
+		for i := 0; i < len(cmd.val); i++ {
+			num, err := rd.ReadIntReply()
+			if err != nil {
+				return nil, err
+			}
+			cmd.val[i] = num
+		}
+		return nil, nil
+	})
+	return cmd.err
+}
+
+//------------------------------------------------------------------------------
+
 type DurationCmd struct {
 	baseCmd
 
@@ -397,7 +462,7 @@ var _ Cmder = (*DurationCmd)(nil)
 
 func NewDurationCmd(precision time.Duration, args ...interface{}) *DurationCmd {
 	return &DurationCmd{
-		baseCmd:   baseCmd{_args: args},
+		baseCmd:   baseCmd{args: args},
 		precision: precision,
 	}
 }
@@ -420,7 +485,14 @@ func (cmd *DurationCmd) readReply(rd *proto.Reader) error {
 	if cmd.err != nil {
 		return cmd.err
 	}
-	cmd.val = time.Duration(n) * cmd.precision
+	switch n {
+	// -2 if the key does not exist
+	// -1 if the key exists but has no associated expire
+	case -2, -1:
+		cmd.val = time.Duration(n)
+	default:
+		cmd.val = time.Duration(n) * cmd.precision
+	}
 	return nil
 }
 
@@ -436,7 +508,7 @@ var _ Cmder = (*TimeCmd)(nil)
 
 func NewTimeCmd(args ...interface{}) *TimeCmd {
 	return &TimeCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -453,32 +525,25 @@ func (cmd *TimeCmd) String() string {
 }
 
 func (cmd *TimeCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(timeParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(time.Time)
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func timeParser(rd *proto.Reader, n int64) (interface{}, error) {
-	if n != 2 {
-		return nil, fmt.Errorf("got %d elements, expected 2", n)
-	}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		if n != 2 {
+			return nil, fmt.Errorf("got %d elements, expected 2", n)
+		}
 
-	sec, err := rd.ReadInt()
-	if err != nil {
-		return nil, err
-	}
+		sec, err := rd.ReadInt()
+		if err != nil {
+			return nil, err
+		}
 
-	microsec, err := rd.ReadInt()
-	if err != nil {
-		return nil, err
-	}
+		microsec, err := rd.ReadInt()
+		if err != nil {
+			return nil, err
+		}
 
-	return time.Unix(sec, microsec*1000), nil
+		cmd.val = time.Unix(sec, microsec*1000)
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -493,7 +558,7 @@ var _ Cmder = (*BoolCmd)(nil)
 
 func NewBoolCmd(args ...interface{}) *BoolCmd {
 	return &BoolCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -514,7 +579,6 @@ func (cmd *BoolCmd) readReply(rd *proto.Reader) error {
 	v, cmd.err = rd.ReadReply(nil)
 	// `SET key value NX` returns nil when key already exists. But
 	// `SETNX key value` returns bool (0/1). So convert nil to bool.
-	// TODO: is this okay?
 	if cmd.err == Nil {
 		cmd.val = false
 		cmd.err = nil
@@ -548,7 +612,7 @@ var _ Cmder = (*StringCmd)(nil)
 
 func NewStringCmd(args ...interface{}) *StringCmd {
 	return &StringCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -561,7 +625,7 @@ func (cmd *StringCmd) Result() (string, error) {
 }
 
 func (cmd *StringCmd) Bytes() ([]byte, error) {
-	return []byte(cmd.val), cmd.err
+	return util.StringToBytes(cmd.val), cmd.err
 }
 
 func (cmd *StringCmd) Int() (int, error) {
@@ -585,6 +649,17 @@ func (cmd *StringCmd) Uint64() (uint64, error) {
 	return strconv.ParseUint(cmd.Val(), 10, 64)
 }
 
+func (cmd *StringCmd) Float32() (float32, error) {
+	if cmd.err != nil {
+		return 0, cmd.err
+	}
+	f, err := strconv.ParseFloat(cmd.Val(), 32)
+	if err != nil {
+		return 0, err
+	}
+	return float32(f), nil
+}
+
 func (cmd *StringCmd) Float64() (float64, error) {
 	if cmd.err != nil {
 		return 0, cmd.err
@@ -592,6 +667,13 @@ func (cmd *StringCmd) Float64() (float64, error) {
 	return strconv.ParseFloat(cmd.Val(), 64)
 }
 
+func (cmd *StringCmd) Time() (time.Time, error) {
+	if cmd.err != nil {
+		return time.Time{}, cmd.err
+	}
+	return time.Parse(time.RFC3339Nano, cmd.Val())
+}
+
 func (cmd *StringCmd) Scan(val interface{}) error {
 	if cmd.err != nil {
 		return cmd.err
@@ -620,7 +702,7 @@ var _ Cmder = (*FloatCmd)(nil)
 
 func NewFloatCmd(args ...interface{}) *FloatCmd {
 	return &FloatCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -653,7 +735,7 @@ var _ Cmder = (*StringSliceCmd)(nil)
 
 func NewStringSliceCmd(args ...interface{}) *StringSliceCmd {
 	return &StringSliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -674,29 +756,21 @@ func (cmd *StringSliceCmd) ScanSlice(container interface{}) error {
 }
 
 func (cmd *StringSliceCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(stringSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.([]string)
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func stringSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	ss := make([]string, 0, n)
-	for i := int64(0); i < n; i++ {
-		s, err := rd.ReadString()
-		if err == Nil {
-			ss = append(ss, "")
-		} else if err != nil {
-			return nil, err
-		} else {
-			ss = append(ss, s)
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]string, n)
+		for i := 0; i < len(cmd.val); i++ {
+			switch s, err := rd.ReadString(); {
+			case err == Nil:
+				cmd.val[i] = ""
+			case err != nil:
+				return nil, err
+			default:
+				cmd.val[i] = s
+			}
 		}
-	}
-	return ss, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -711,7 +785,7 @@ var _ Cmder = (*BoolSliceCmd)(nil)
 
 func NewBoolSliceCmd(args ...interface{}) *BoolSliceCmd {
 	return &BoolSliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -728,26 +802,18 @@ func (cmd *BoolSliceCmd) String() string {
 }
 
 func (cmd *BoolSliceCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(boolSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.([]bool)
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func boolSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	bools := make([]bool, 0, n)
-	for i := int64(0); i < n; i++ {
-		n, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]bool, n)
+		for i := 0; i < len(cmd.val); i++ {
+			n, err := rd.ReadIntReply()
+			if err != nil {
+				return nil, err
+			}
+			cmd.val[i] = n == 1
 		}
-		bools = append(bools, n == 1)
-	}
-	return bools, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -762,7 +828,7 @@ var _ Cmder = (*StringStringMapCmd)(nil)
 
 func NewStringStringMapCmd(args ...interface{}) *StringStringMapCmd {
 	return &StringStringMapCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -779,32 +845,24 @@ func (cmd *StringStringMapCmd) String() string {
 }
 
 func (cmd *StringStringMapCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(stringStringMapParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(map[string]string)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make(map[string]string, n/2)
+		for i := int64(0); i < n; i += 2 {
+			key, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
 
-// Implements proto.MultiBulkParse
-func stringStringMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]string, n/2)
-	for i := int64(0); i < n; i += 2 {
-		key, err := rd.ReadString()
-		if err != nil {
-			return nil, err
-		}
+			value, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
 
-		value, err := rd.ReadString()
-		if err != nil {
-			return nil, err
+			cmd.val[key] = value
 		}
-
-		m[key] = value
-	}
-	return m, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -819,7 +877,7 @@ var _ Cmder = (*StringIntMapCmd)(nil)
 
 func NewStringIntMapCmd(args ...interface{}) *StringIntMapCmd {
 	return &StringIntMapCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -836,32 +894,24 @@ func (cmd *StringIntMapCmd) String() string {
 }
 
 func (cmd *StringIntMapCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(stringIntMapParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(map[string]int64)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make(map[string]int64, n/2)
+		for i := int64(0); i < n; i += 2 {
+			key, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
 
-// Implements proto.MultiBulkParse
-func stringIntMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]int64, n/2)
-	for i := int64(0); i < n; i += 2 {
-		key, err := rd.ReadString()
-		if err != nil {
-			return nil, err
-		}
+			n, err := rd.ReadIntReply()
+			if err != nil {
+				return nil, err
+			}
 
-		n, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
+			cmd.val[key] = n
 		}
-
-		m[key] = n
-	}
-	return m, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -876,7 +926,7 @@ var _ Cmder = (*StringStructMapCmd)(nil)
 
 func NewStringStructMapCmd(args ...interface{}) *StringStructMapCmd {
 	return &StringStructMapCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -893,27 +943,18 @@ func (cmd *StringStructMapCmd) String() string {
 }
 
 func (cmd *StringStructMapCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(stringStructMapParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(map[string]struct{})
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func stringStructMapParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]struct{}, n)
-	for i := int64(0); i < n; i++ {
-		key, err := rd.ReadString()
-		if err != nil {
-			return nil, err
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make(map[string]struct{}, n)
+		for i := int64(0); i < n; i++ {
+			key, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
+			cmd.val[key] = struct{}{}
 		}
-
-		m[key] = struct{}{}
-	}
-	return m, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -933,7 +974,7 @@ var _ Cmder = (*XMessageSliceCmd)(nil)
 
 func NewXMessageSliceCmd(args ...interface{}) *XMessageSliceCmd {
 	return &XMessageSliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -961,23 +1002,30 @@ func (cmd *XMessageSliceCmd) readReply(rd *proto.Reader) error {
 
 // Implements proto.MultiBulkParse
 func xMessageSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	msgs := make([]XMessage, 0, n)
-	for i := int64(0); i < n; i++ {
+	msgs := make([]XMessage, n)
+	for i := 0; i < len(msgs); i++ {
+		i := i
 		_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
 			id, err := rd.ReadString()
 			if err != nil {
 				return nil, err
 			}
 
+			var values map[string]interface{}
+
 			v, err := rd.ReadArrayReply(stringInterfaceMapParser)
 			if err != nil {
-				return nil, err
+				if err != proto.Nil {
+					return nil, err
+				}
+			} else {
+				values = v.(map[string]interface{})
 			}
 
-			msgs = append(msgs, XMessage{
+			msgs[i] = XMessage{
 				ID:     id,
-				Values: v.(map[string]interface{}),
-			})
+				Values: values,
+			}
 			return nil, nil
 		})
 		if err != nil {
@@ -1023,7 +1071,7 @@ var _ Cmder = (*XStreamSliceCmd)(nil)
 
 func NewXStreamSliceCmd(args ...interface{}) *XStreamSliceCmd {
 	return &XStreamSliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1040,45 +1088,38 @@ func (cmd *XStreamSliceCmd) String() string {
 }
 
 func (cmd *XStreamSliceCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(xStreamSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.([]XStream)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]XStream, n)
+		for i := 0; i < len(cmd.val); i++ {
+			i := i
+			_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+				if n != 2 {
+					return nil, fmt.Errorf("got %d, wanted 2", n)
+				}
 
-// Implements proto.MultiBulkParse
-func xStreamSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	ret := make([]XStream, 0, n)
-	for i := int64(0); i < n; i++ {
-		_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
-			if n != 2 {
-				return nil, fmt.Errorf("got %d, wanted 2", n)
-			}
+				stream, err := rd.ReadString()
+				if err != nil {
+					return nil, err
+				}
 
-			stream, err := rd.ReadString()
-			if err != nil {
-				return nil, err
-			}
+				v, err := rd.ReadArrayReply(xMessageSliceParser)
+				if err != nil {
+					return nil, err
+				}
 
-			v, err := rd.ReadArrayReply(xMessageSliceParser)
+				cmd.val[i] = XStream{
+					Stream:   stream,
+					Messages: v.([]XMessage),
+				}
+				return nil, nil
+			})
 			if err != nil {
 				return nil, err
 			}
-
-			ret = append(ret, XStream{
-				Stream:   stream,
-				Messages: v.([]XMessage),
-			})
-			return nil, nil
-		})
-		if err != nil {
-			return nil, err
 		}
-	}
-	return ret, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -1099,7 +1140,7 @@ var _ Cmder = (*XPendingCmd)(nil)
 
 func NewXPendingCmd(args ...interface{}) *XPendingCmd {
 	return &XPendingCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1116,81 +1157,74 @@ func (cmd *XPendingCmd) String() string {
 }
 
 func (cmd *XPendingCmd) readReply(rd *proto.Reader) error {
-	var info interface{}
-	info, cmd.err = rd.ReadArrayReply(xPendingParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = info.(*XPending)
-	return nil
-}
-
-func xPendingParser(rd *proto.Reader, n int64) (interface{}, error) {
-	if n != 4 {
-		return nil, fmt.Errorf("got %d, wanted 4", n)
-	}
-
-	count, err := rd.ReadIntReply()
-	if err != nil {
-		return nil, err
-	}
-
-	lower, err := rd.ReadString()
-	if err != nil && err != Nil {
-		return nil, err
-	}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		if n != 4 {
+			return nil, fmt.Errorf("got %d, wanted 4", n)
+		}
 
-	higher, err := rd.ReadString()
-	if err != nil && err != Nil {
-		return nil, err
-	}
+		count, err := rd.ReadIntReply()
+		if err != nil {
+			return nil, err
+		}
 
-	pending := &XPending{
-		Count:  count,
-		Lower:  lower,
-		Higher: higher,
-	}
-	_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
-		for i := int64(0); i < n; i++ {
-			_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
-				if n != 2 {
-					return nil, fmt.Errorf("got %d, wanted 2", n)
-				}
+		lower, err := rd.ReadString()
+		if err != nil && err != Nil {
+			return nil, err
+		}
 
-				consumerName, err := rd.ReadString()
-				if err != nil {
-					return nil, err
-				}
+		higher, err := rd.ReadString()
+		if err != nil && err != Nil {
+			return nil, err
+		}
 
-				consumerPending, err := rd.ReadInt()
+		cmd.val = &XPending{
+			Count:  count,
+			Lower:  lower,
+			Higher: higher,
+		}
+		_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+			for i := int64(0); i < n; i++ {
+				_, err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+					if n != 2 {
+						return nil, fmt.Errorf("got %d, wanted 2", n)
+					}
+
+					consumerName, err := rd.ReadString()
+					if err != nil {
+						return nil, err
+					}
+
+					consumerPending, err := rd.ReadInt()
+					if err != nil {
+						return nil, err
+					}
+
+					if cmd.val.Consumers == nil {
+						cmd.val.Consumers = make(map[string]int64)
+					}
+					cmd.val.Consumers[consumerName] = consumerPending
+
+					return nil, nil
+				})
 				if err != nil {
 					return nil, err
 				}
-
-				if pending.Consumers == nil {
-					pending.Consumers = make(map[string]int64)
-				}
-				pending.Consumers[consumerName] = consumerPending
-
-				return nil, nil
-			})
-			if err != nil {
-				return nil, err
 			}
+			return nil, nil
+		})
+		if err != nil && err != Nil {
+			return nil, err
 		}
+
 		return nil, nil
 	})
-	if err != nil && err != Nil {
-		return nil, err
-	}
-
-	return pending, nil
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
 
 type XPendingExt struct {
-	Id         string
+	ID         string
 	Consumer   string
 	Idle       time.Duration
 	RetryCount int64
@@ -1205,7 +1239,7 @@ var _ Cmder = (*XPendingExtCmd)(nil)
 
 func NewXPendingExtCmd(args ...interface{}) *XPendingExtCmd {
 	return &XPendingExtCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1222,62 +1256,143 @@ func (cmd *XPendingExtCmd) String() string {
 }
 
 func (cmd *XPendingExtCmd) readReply(rd *proto.Reader) error {
-	var info interface{}
-	info, cmd.err = rd.ReadArrayReply(xPendingExtSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = info.([]XPendingExt)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]XPendingExt, 0, n)
+		for i := int64(0); i < n; i++ {
+			_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+				if n != 4 {
+					return nil, fmt.Errorf("got %d, wanted 4", n)
+				}
 
-func xPendingExtSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	ret := make([]XPendingExt, 0, n)
-	for i := int64(0); i < n; i++ {
-		_, err := rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
-			if n != 4 {
-				return nil, fmt.Errorf("got %d, wanted 4", n)
-			}
+				id, err := rd.ReadString()
+				if err != nil {
+					return nil, err
+				}
 
-			id, err := rd.ReadString()
+				consumer, err := rd.ReadString()
+				if err != nil && err != Nil {
+					return nil, err
+				}
+
+				idle, err := rd.ReadIntReply()
+				if err != nil && err != Nil {
+					return nil, err
+				}
+
+				retryCount, err := rd.ReadIntReply()
+				if err != nil && err != Nil {
+					return nil, err
+				}
+
+				cmd.val = append(cmd.val, XPendingExt{
+					ID:         id,
+					Consumer:   consumer,
+					Idle:       time.Duration(idle) * time.Millisecond,
+					RetryCount: retryCount,
+				})
+				return nil, nil
+			})
 			if err != nil {
 				return nil, err
 			}
+		}
+		return nil, nil
+	})
+	return cmd.err
+}
 
-			consumer, err := rd.ReadString()
-			if err != nil && err != Nil {
-				return nil, err
-			}
+//------------------------------------------------------------------------------
 
-			idle, err := rd.ReadIntReply()
-			if err != nil && err != Nil {
-				return nil, err
-			}
+type XInfoGroupsCmd struct {
+	baseCmd
+	val []XInfoGroups
+}
 
-			retryCount, err := rd.ReadIntReply()
-			if err != nil && err != Nil {
-				return nil, err
-			}
+type XInfoGroups struct {
+	Name            string
+	Consumers       int64
+	Pending         int64
+	LastDeliveredID string
+}
 
-			ret = append(ret, XPendingExt{
-				Id:         id,
-				Consumer:   consumer,
-				Idle:       time.Duration(idle) * time.Millisecond,
-				RetryCount: retryCount,
-			})
+var _ Cmder = (*XInfoGroupsCmd)(nil)
+
+func NewXInfoGroupsCmd(stream string) *XInfoGroupsCmd {
+	return &XInfoGroupsCmd{
+		baseCmd: baseCmd{args: []interface{}{"xinfo", "groups", stream}},
+	}
+}
+
+func (cmd *XInfoGroupsCmd) Val() []XInfoGroups {
+	return cmd.val
+}
+
+func (cmd *XInfoGroupsCmd) Result() ([]XInfoGroups, error) {
+	return cmd.val, cmd.err
+}
+
+func (cmd *XInfoGroupsCmd) String() string {
+	return cmdString(cmd, cmd.val)
+}
+
+func (cmd *XInfoGroupsCmd) readReply(rd *proto.Reader) error {
+	_, cmd.err = rd.ReadArrayReply(
+		func(rd *proto.Reader, n int64) (interface{}, error) {
+			for i := int64(0); i < n; i++ {
+				v, err := rd.ReadReply(xGroupInfoParser)
+				if err != nil {
+					return nil, err
+				}
+				cmd.val = append(cmd.val, v.(XInfoGroups))
+			}
 			return nil, nil
 		})
+	return nil
+}
+
+func xGroupInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
+	if n != 8 {
+		return nil, fmt.Errorf("redis: got %d elements in XINFO GROUPS reply,"+
+			"wanted 8", n)
+	}
+	var (
+		err error
+		grp XInfoGroups
+		key string
+		val string
+	)
+
+	for i := 0; i < 4; i++ {
+		key, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
+		val, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
+		switch key {
+		case "name":
+			grp.Name = val
+		case "consumers":
+			grp.Consumers, err = strconv.ParseInt(val, 0, 64)
+		case "pending":
+			grp.Pending, err = strconv.ParseInt(val, 0, 64)
+		case "last-delivered-id":
+			grp.LastDeliveredID = val
+		default:
+			return nil, fmt.Errorf("redis: unexpected content %s "+
+				"in XINFO GROUPS reply", key)
+		}
 		if err != nil {
 			return nil, err
 		}
 	}
-	return ret, nil
+	return grp, err
 }
 
 //------------------------------------------------------------------------------
 
-//------------------------------------------------------------------------------
-
 type ZSliceCmd struct {
 	baseCmd
 
@@ -1288,7 +1403,7 @@ var _ Cmder = (*ZSliceCmd)(nil)
 
 func NewZSliceCmd(args ...interface{}) *ZSliceCmd {
 	return &ZSliceCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1305,34 +1420,27 @@ func (cmd *ZSliceCmd) String() string {
 }
 
 func (cmd *ZSliceCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(zSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.([]Z)
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	zz := make([]Z, n/2)
-	for i := int64(0); i < n; i += 2 {
-		var err error
-
-		z := &zz[i/2]
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]Z, n/2)
+		for i := 0; i < len(cmd.val); i++ {
+			member, err := rd.ReadString()
+			if err != nil {
+				return nil, err
+			}
 
-		z.Member, err = rd.ReadString()
-		if err != nil {
-			return nil, err
-		}
+			score, err := rd.ReadFloatReply()
+			if err != nil {
+				return nil, err
+			}
 
-		z.Score, err = rd.ReadFloatReply()
-		if err != nil {
-			return nil, err
+			cmd.val[i] = Z{
+				Member: member,
+				Score:  score,
+			}
 		}
-	}
-	return zz, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -1340,22 +1448,22 @@ func zSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
 type ZWithKeyCmd struct {
 	baseCmd
 
-	val ZWithKey
+	val *ZWithKey
 }
 
 var _ Cmder = (*ZWithKeyCmd)(nil)
 
 func NewZWithKeyCmd(args ...interface{}) *ZWithKeyCmd {
 	return &ZWithKeyCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
-func (cmd *ZWithKeyCmd) Val() ZWithKey {
+func (cmd *ZWithKeyCmd) Val() *ZWithKey {
 	return cmd.val
 }
 
-func (cmd *ZWithKeyCmd) Result() (ZWithKey, error) {
+func (cmd *ZWithKeyCmd) Result() (*ZWithKey, error) {
 	return cmd.Val(), cmd.Err()
 }
 
@@ -1364,37 +1472,32 @@ func (cmd *ZWithKeyCmd) String() string {
 }
 
 func (cmd *ZWithKeyCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(zWithKeyParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(ZWithKey)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		if n != 3 {
+			return nil, fmt.Errorf("got %d elements, expected 3", n)
+		}
 
-// Implements proto.MultiBulkParse
-func zWithKeyParser(rd *proto.Reader, n int64) (interface{}, error) {
-	if n != 3 {
-		return nil, fmt.Errorf("got %d elements, expected 3", n)
-	}
+		cmd.val = &ZWithKey{}
+		var err error
 
-	var z ZWithKey
-	var err error
+		cmd.val.Key, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
 
-	z.Key, err = rd.ReadString()
-	if err != nil {
-		return nil, err
-	}
-	z.Member, err = rd.ReadString()
-	if err != nil {
-		return nil, err
-	}
-	z.Score, err = rd.ReadFloatReply()
-	if err != nil {
-		return nil, err
-	}
-	return z, nil
+		cmd.val.Member, err = rd.ReadString()
+		if err != nil {
+			return nil, err
+		}
+
+		cmd.val.Score, err = rd.ReadFloatReply()
+		if err != nil {
+			return nil, err
+		}
+
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -1412,7 +1515,7 @@ var _ Cmder = (*ScanCmd)(nil)
 
 func NewScanCmd(process func(cmd Cmder) error, args ...interface{}) *ScanCmd {
 	return &ScanCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 		process: process,
 	}
 }
@@ -1444,7 +1547,7 @@ func (cmd *ScanCmd) Iterator() *ScanIterator {
 //------------------------------------------------------------------------------
 
 type ClusterNode struct {
-	Id   string
+	ID   string
 	Addr string
 }
 
@@ -1464,7 +1567,7 @@ var _ Cmder = (*ClusterSlotsCmd)(nil)
 
 func NewClusterSlotsCmd(args ...interface{}) *ClusterSlotsCmd {
 	return &ClusterSlotsCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1481,77 +1584,69 @@ func (cmd *ClusterSlotsCmd) String() string {
 }
 
 func (cmd *ClusterSlotsCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(clusterSlotsParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.([]ClusterSlot)
-	return nil
-}
-
-// Implements proto.MultiBulkParse
-func clusterSlotsParser(rd *proto.Reader, n int64) (interface{}, error) {
-	slots := make([]ClusterSlot, n)
-	for i := 0; i < len(slots); i++ {
-		n, err := rd.ReadArrayLen()
-		if err != nil {
-			return nil, err
-		}
-		if n < 2 {
-			err := fmt.Errorf("redis: got %d elements in cluster info, expected at least 2", n)
-			return nil, err
-		}
-
-		start, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-
-		end, err := rd.ReadIntReply()
-		if err != nil {
-			return nil, err
-		}
-
-		nodes := make([]ClusterNode, n-2)
-		for j := 0; j < len(nodes); j++ {
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]ClusterSlot, n)
+		for i := 0; i < len(cmd.val); i++ {
 			n, err := rd.ReadArrayLen()
 			if err != nil {
 				return nil, err
 			}
-			if n != 2 && n != 3 {
-				err := fmt.Errorf("got %d elements in cluster info address, expected 2 or 3", n)
+			if n < 2 {
+				err := fmt.Errorf("redis: got %d elements in cluster info, expected at least 2", n)
 				return nil, err
 			}
 
-			ip, err := rd.ReadString()
+			start, err := rd.ReadIntReply()
 			if err != nil {
 				return nil, err
 			}
 
-			port, err := rd.ReadString()
+			end, err := rd.ReadIntReply()
 			if err != nil {
 				return nil, err
 			}
 
-			nodes[j].Addr = net.JoinHostPort(ip, port)
+			nodes := make([]ClusterNode, n-2)
+			for j := 0; j < len(nodes); j++ {
+				n, err := rd.ReadArrayLen()
+				if err != nil {
+					return nil, err
+				}
+				if n != 2 && n != 3 {
+					err := fmt.Errorf("got %d elements in cluster info address, expected 2 or 3", n)
+					return nil, err
+				}
 
-			if n == 3 {
-				id, err := rd.ReadString()
+				ip, err := rd.ReadString()
 				if err != nil {
 					return nil, err
 				}
-				nodes[j].Id = id
+
+				port, err := rd.ReadString()
+				if err != nil {
+					return nil, err
+				}
+
+				nodes[j].Addr = net.JoinHostPort(ip, port)
+
+				if n == 3 {
+					id, err := rd.ReadString()
+					if err != nil {
+						return nil, err
+					}
+					nodes[j].ID = id
+				}
 			}
-		}
 
-		slots[i] = ClusterSlot{
-			Start: int(start),
-			End:   int(end),
-			Nodes: nodes,
+			cmd.val[i] = ClusterSlot{
+				Start: int(start),
+				End:   int(end),
+				Nodes: nodes,
+			}
 		}
-	}
-	return slots, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -1588,6 +1683,13 @@ type GeoLocationCmd struct {
 var _ Cmder = (*GeoLocationCmd)(nil)
 
 func NewGeoLocationCmd(q *GeoRadiusQuery, args ...interface{}) *GeoLocationCmd {
+	return &GeoLocationCmd{
+		baseCmd: baseCmd{args: geoLocationArgs(q, args...)},
+		q:       q,
+	}
+}
+
+func geoLocationArgs(q *GeoRadiusQuery, args ...interface{}) []interface{} {
 	args = append(args, q.Radius)
 	if q.Unit != "" {
 		args = append(args, q.Unit)
@@ -1617,10 +1719,7 @@ func NewGeoLocationCmd(q *GeoRadiusQuery, args ...interface{}) *GeoLocationCmd {
 		args = append(args, "storedist")
 		args = append(args, q.StoreDist)
 	}
-	return &GeoLocationCmd{
-		baseCmd: baseCmd{_args: args},
-		q:       q,
-	}
+	return args
 }
 
 func (cmd *GeoLocationCmd) Val() []GeoLocation {
@@ -1645,6 +1744,30 @@ func (cmd *GeoLocationCmd) readReply(rd *proto.Reader) error {
 	return nil
 }
 
+func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse {
+	return func(rd *proto.Reader, n int64) (interface{}, error) {
+		locs := make([]GeoLocation, 0, n)
+		for i := int64(0); i < n; i++ {
+			v, err := rd.ReadReply(newGeoLocationParser(q))
+			if err != nil {
+				return nil, err
+			}
+			switch vv := v.(type) {
+			case string:
+				locs = append(locs, GeoLocation{
+					Name: vv,
+				})
+			case *GeoLocation:
+				//TODO: avoid copying
+				locs = append(locs, *vv)
+			default:
+				return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
+			}
+		}
+		return locs, nil
+	}
+}
+
 func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse {
 	return func(rd *proto.Reader, n int64) (interface{}, error) {
 		var loc GeoLocation
@@ -1689,29 +1812,6 @@ func newGeoLocationParser(q *GeoRadiusQuery) proto.MultiBulkParse {
 	}
 }
 
-func newGeoLocationSliceParser(q *GeoRadiusQuery) proto.MultiBulkParse {
-	return func(rd *proto.Reader, n int64) (interface{}, error) {
-		locs := make([]GeoLocation, 0, n)
-		for i := int64(0); i < n; i++ {
-			v, err := rd.ReadReply(newGeoLocationParser(q))
-			if err != nil {
-				return nil, err
-			}
-			switch vv := v.(type) {
-			case string:
-				locs = append(locs, GeoLocation{
-					Name: vv,
-				})
-			case *GeoLocation:
-				locs = append(locs, *vv)
-			default:
-				return nil, fmt.Errorf("got %T, expected string or *GeoLocation", v)
-			}
-		}
-		return locs, nil
-	}
-}
-
 //------------------------------------------------------------------------------
 
 type GeoPos struct {
@@ -1721,19 +1821,19 @@ type GeoPos struct {
 type GeoPosCmd struct {
 	baseCmd
 
-	positions []*GeoPos
+	val []*GeoPos
 }
 
 var _ Cmder = (*GeoPosCmd)(nil)
 
 func NewGeoPosCmd(args ...interface{}) *GeoPosCmd {
 	return &GeoPosCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
 func (cmd *GeoPosCmd) Val() []*GeoPos {
-	return cmd.positions
+	return cmd.val
 }
 
 func (cmd *GeoPosCmd) Result() ([]*GeoPos, error) {
@@ -1741,55 +1841,42 @@ func (cmd *GeoPosCmd) Result() ([]*GeoPos, error) {
 }
 
 func (cmd *GeoPosCmd) String() string {
-	return cmdString(cmd, cmd.positions)
+	return cmdString(cmd, cmd.val)
 }
 
 func (cmd *GeoPosCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(geoPosSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.positions = v.([]*GeoPos)
-	return nil
-}
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make([]*GeoPos, n)
+		for i := 0; i < len(cmd.val); i++ {
+			i := i
+			_, err := rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+				longitude, err := rd.ReadFloatReply()
+				if err != nil {
+					return nil, err
+				}
 
-func geoPosSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	positions := make([]*GeoPos, 0, n)
-	for i := int64(0); i < n; i++ {
-		v, err := rd.ReadReply(geoPosParser)
-		if err != nil {
-			if err == Nil {
-				positions = append(positions, nil)
-				continue
+				latitude, err := rd.ReadFloatReply()
+				if err != nil {
+					return nil, err
+				}
+
+				cmd.val[i] = &GeoPos{
+					Longitude: longitude,
+					Latitude:  latitude,
+				}
+				return nil, nil
+			})
+			if err != nil {
+				if err == Nil {
+					cmd.val[i] = nil
+					continue
+				}
+				return nil, err
 			}
-			return nil, err
-		}
-		switch v := v.(type) {
-		case *GeoPos:
-			positions = append(positions, v)
-		default:
-			return nil, fmt.Errorf("got %T, expected *GeoPos", v)
 		}
-	}
-	return positions, nil
-}
-
-func geoPosParser(rd *proto.Reader, n int64) (interface{}, error) {
-	var pos GeoPos
-	var err error
-
-	pos.Longitude, err = rd.ReadFloatReply()
-	if err != nil {
-		return nil, err
-	}
-
-	pos.Latitude, err = rd.ReadFloatReply()
-	if err != nil {
-		return nil, err
-	}
-
-	return &pos, nil
+		return nil, nil
+	})
+	return cmd.err
 }
 
 //------------------------------------------------------------------------------
@@ -1798,6 +1885,7 @@ type CommandInfo struct {
 	Name        string
 	Arity       int8
 	Flags       []string
+	ACLFlags    []string
 	FirstKeyPos int8
 	LastKeyPos  int8
 	StepCount   int8
@@ -1814,7 +1902,7 @@ var _ Cmder = (*CommandsInfoCmd)(nil)
 
 func NewCommandsInfoCmd(args ...interface{}) *CommandsInfoCmd {
 	return &CommandsInfoCmd{
-		baseCmd: baseCmd{_args: args},
+		baseCmd: baseCmd{args: args},
 	}
 }
 
@@ -1831,38 +1919,35 @@ func (cmd *CommandsInfoCmd) String() string {
 }
 
 func (cmd *CommandsInfoCmd) readReply(rd *proto.Reader) error {
-	var v interface{}
-	v, cmd.err = rd.ReadArrayReply(commandInfoSliceParser)
-	if cmd.err != nil {
-		return cmd.err
-	}
-	cmd.val = v.(map[string]*CommandInfo)
-	return nil
+	_, cmd.err = rd.ReadArrayReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.val = make(map[string]*CommandInfo, n)
+		for i := int64(0); i < n; i++ {
+			v, err := rd.ReadReply(commandInfoParser)
+			if err != nil {
+				return nil, err
+			}
+			vv := v.(*CommandInfo)
+			cmd.val[vv.Name] = vv
+		}
+		return nil, nil
+	})
+	return cmd.err
 }
 
-// Implements proto.MultiBulkParse
-func commandInfoSliceParser(rd *proto.Reader, n int64) (interface{}, error) {
-	m := make(map[string]*CommandInfo, n)
-	for i := int64(0); i < n; i++ {
-		v, err := rd.ReadReply(commandInfoParser)
-		if err != nil {
-			return nil, err
-		}
-		vv := v.(*CommandInfo)
-		m[vv.Name] = vv
+func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
+	const numArgRedis5 = 6
+	const numArgRedis6 = 7
 
+	switch n {
+	case numArgRedis5, numArgRedis6:
+		// continue
+	default:
+		return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 7", n)
 	}
-	return m, nil
-}
 
-func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
 	var cmd CommandInfo
 	var err error
 
-	if n != 6 {
-		return nil, fmt.Errorf("redis: got %d elements in COMMAND reply, wanted 6", n)
-	}
-
 	cmd.Name, err = rd.ReadString()
 	if err != nil {
 		return nil, err
@@ -1874,11 +1959,23 @@ func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
 	}
 	cmd.Arity = int8(arity)
 
-	flags, err := rd.ReadReply(stringSliceParser)
+	_, err = rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.Flags = make([]string, n)
+		for i := 0; i < len(cmd.Flags); i++ {
+			switch s, err := rd.ReadString(); {
+			case err == Nil:
+				cmd.Flags[i] = ""
+			case err != nil:
+				return nil, err
+			default:
+				cmd.Flags[i] = s
+			}
+		}
+		return nil, nil
+	})
 	if err != nil {
 		return nil, err
 	}
-	cmd.Flags = flags.([]string)
 
 	firstKeyPos, err := rd.ReadIntReply()
 	if err != nil {
@@ -1905,6 +2002,28 @@ func commandInfoParser(rd *proto.Reader, n int64) (interface{}, error) {
 		}
 	}
 
+	if n == numArgRedis5 {
+		return &cmd, nil
+	}
+
+	_, err = rd.ReadReply(func(rd *proto.Reader, n int64) (interface{}, error) {
+		cmd.ACLFlags = make([]string, n)
+		for i := 0; i < len(cmd.ACLFlags); i++ {
+			switch s, err := rd.ReadString(); {
+			case err == Nil:
+				cmd.ACLFlags[i] = ""
+			case err != nil:
+				return nil, err
+			default:
+				cmd.ACLFlags[i] = s
+			}
+		}
+		return nil, nil
+	})
+	if err != nil {
+		return nil, err
+	}
+
 	return &cmd, nil
 }
 
@@ -1929,6 +2048,15 @@ func (c *cmdsInfoCache) Get() (map[string]*CommandInfo, error) {
 		if err != nil {
 			return err
 		}
+
+		// Extensions have cmd names in upper case. Convert them to lower case.
+		for k, v := range cmds {
+			lower := internal.ToLower(k)
+			if lower != k {
+				cmds[lower] = v
+			}
+		}
+
 		c.cmds = cmds
 		return nil
 	})
diff --git a/vendor/github.com/go-redis/redis/commands.go b/vendor/github.com/go-redis/redis/v7/commands.go
index 653e4abe96..da5ceda13e 100644
--- a/vendor/github.com/go-redis/redis/commands.go
+++ b/vendor/github.com/go-redis/redis/v7/commands.go
@@ -5,7 +5,7 @@ import (
 	"io"
 	"time"
 
-	"github.com/go-redis/redis/internal"
+	"github.com/go-redis/redis/v7/internal"
 )
 
 func usePrecise(dur time.Duration) bool {
@@ -14,7 +14,7 @@ func usePrecise(dur time.Duration) bool {
 
 func formatMs(dur time.Duration) int64 {
 	if dur > 0 && dur < time.Millisecond {
-		internal.Logf(
+		internal.Logger.Printf(
 			"specified duration is %s, but minimal supported value is %s",
 			dur, time.Millisecond,
 		)
@@ -24,7 +24,7 @@ func formatMs(dur time.Duration) int64 {
 
 func formatSec(dur time.Duration) int64 {
 	if dur > 0 && dur < time.Second {
-		internal.Logf(
+		internal.Logger.Printf(
 			"specified duration is %s, but minimal supported value is %s",
 			dur, time.Second,
 		)
@@ -34,17 +34,21 @@ func formatSec(dur time.Duration) int64 {
 
 func appendArgs(dst, src []interface{}) []interface{} {
 	if len(src) == 1 {
-		if ss, ok := src[0].([]string); ok {
-			for _, s := range ss {
+		switch v := src[0].(type) {
+		case []string:
+			for _, s := range v {
 				dst = append(dst, s)
 			}
 			return dst
+		case map[string]interface{}:
+			for k, v := range v {
+				dst = append(dst, k, v)
+			}
+			return dst
 		}
 	}
 
-	for _, v := range src {
-		dst = append(dst, v)
-	}
+	dst = append(dst, src...)
 	return dst
 }
 
@@ -67,8 +71,8 @@ type Cmdable interface {
 	Expire(key string, expiration time.Duration) *BoolCmd
 	ExpireAt(key string, tm time.Time) *BoolCmd
 	Keys(pattern string) *StringSliceCmd
-	Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd
-	Move(key string, db int64) *BoolCmd
+	Migrate(host, port, key string, db int, timeout time.Duration) *StatusCmd
+	Move(key string, db int) *BoolCmd
 	ObjectRefCount(key string) *IntCmd
 	ObjectEncoding(key string) *StringCmd
 	ObjectIdleTime(key string) *DurationCmd
@@ -98,6 +102,7 @@ type Cmdable interface {
 	BitOpXor(destKey string, keys ...string) *IntCmd
 	BitOpNot(destKey string, key string) *IntCmd
 	BitPos(key string, bit int64, pos ...int64) *IntCmd
+	BitField(key string, args ...interface{}) *IntSliceCmd
 	Decr(key string) *IntCmd
 	DecrBy(key string, decrement int64) *IntCmd
 	Get(key string) *StringCmd
@@ -108,8 +113,8 @@ type Cmdable interface {
 	IncrBy(key string, value int64) *IntCmd
 	IncrByFloat(key string, value float64) *FloatCmd
 	MGet(keys ...string) *SliceCmd
-	MSet(pairs ...interface{}) *StatusCmd
-	MSetNX(pairs ...interface{}) *BoolCmd
+	MSet(values ...interface{}) *StatusCmd
+	MSetNX(values ...interface{}) *BoolCmd
 	Set(key string, value interface{}, expiration time.Duration) *StatusCmd
 	SetBit(key string, offset int64, value int) *IntCmd
 	SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd
@@ -125,8 +130,8 @@ type Cmdable interface {
 	HKeys(key string) *StringSliceCmd
 	HLen(key string) *IntCmd
 	HMGet(key string, fields ...string) *SliceCmd
-	HMSet(key string, fields map[string]interface{}) *StatusCmd
-	HSet(key, field string, value interface{}) *BoolCmd
+	HSet(key string, values ...interface{}) *IntCmd
+	HMSet(key string, values ...interface{}) *BoolCmd
 	HSetNX(key, field string, value interface{}) *BoolCmd
 	HVals(key string) *StringSliceCmd
 	BLPop(timeout time.Duration, keys ...string) *StringSliceCmd
@@ -139,7 +144,7 @@ type Cmdable interface {
 	LLen(key string) *IntCmd
 	LPop(key string) *StringCmd
 	LPush(key string, values ...interface{}) *IntCmd
-	LPushX(key string, value interface{}) *IntCmd
+	LPushX(key string, values ...interface{}) *IntCmd
 	LRange(key string, start, stop int64) *StringSliceCmd
 	LRem(key string, count int64, value interface{}) *IntCmd
 	LSet(key string, index int64, value interface{}) *StatusCmd
@@ -147,7 +152,7 @@ type Cmdable interface {
 	RPop(key string) *StringCmd
 	RPopLPush(source, destination string) *StringCmd
 	RPush(key string, values ...interface{}) *IntCmd
-	RPushX(key string, value interface{}) *IntCmd
+	RPushX(key string, values ...interface{}) *IntCmd
 	SAdd(key string, members ...interface{}) *IntCmd
 	SCard(key string) *IntCmd
 	SDiff(keys ...string) *StringSliceCmd
@@ -187,29 +192,30 @@ type Cmdable interface {
 	XClaimJustID(a *XClaimArgs) *StringSliceCmd
 	XTrim(key string, maxLen int64) *IntCmd
 	XTrimApprox(key string, maxLen int64) *IntCmd
+	XInfoGroups(key string) *XInfoGroupsCmd
 	BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd
 	BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd
-	ZAdd(key string, members ...Z) *IntCmd
-	ZAddNX(key string, members ...Z) *IntCmd
-	ZAddXX(key string, members ...Z) *IntCmd
-	ZAddCh(key string, members ...Z) *IntCmd
-	ZAddNXCh(key string, members ...Z) *IntCmd
-	ZAddXXCh(key string, members ...Z) *IntCmd
-	ZIncr(key string, member Z) *FloatCmd
-	ZIncrNX(key string, member Z) *FloatCmd
-	ZIncrXX(key string, member Z) *FloatCmd
+	ZAdd(key string, members ...*Z) *IntCmd
+	ZAddNX(key string, members ...*Z) *IntCmd
+	ZAddXX(key string, members ...*Z) *IntCmd
+	ZAddCh(key string, members ...*Z) *IntCmd
+	ZAddNXCh(key string, members ...*Z) *IntCmd
+	ZAddXXCh(key string, members ...*Z) *IntCmd
+	ZIncr(key string, member *Z) *FloatCmd
+	ZIncrNX(key string, member *Z) *FloatCmd
+	ZIncrXX(key string, member *Z) *FloatCmd
 	ZCard(key string) *IntCmd
 	ZCount(key, min, max string) *IntCmd
 	ZLexCount(key, min, max string) *IntCmd
 	ZIncrBy(key string, increment float64, member string) *FloatCmd
-	ZInterStore(destination string, store ZStore, keys ...string) *IntCmd
+	ZInterStore(destination string, store *ZStore) *IntCmd
 	ZPopMax(key string, count ...int64) *ZSliceCmd
 	ZPopMin(key string, count ...int64) *ZSliceCmd
 	ZRange(key string, start, stop int64) *StringSliceCmd
 	ZRangeWithScores(key string, start, stop int64) *ZSliceCmd
-	ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd
-	ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd
-	ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd
+	ZRangeByScore(key string, opt *ZRangeBy) *StringSliceCmd
+	ZRangeByLex(key string, opt *ZRangeBy) *StringSliceCmd
+	ZRangeByScoreWithScores(key string, opt *ZRangeBy) *ZSliceCmd
 	ZRank(key, member string) *IntCmd
 	ZRem(key string, members ...interface{}) *IntCmd
 	ZRemRangeByRank(key string, start, stop int64) *IntCmd
@@ -217,12 +223,12 @@ type Cmdable interface {
 	ZRemRangeByLex(key, min, max string) *IntCmd
 	ZRevRange(key string, start, stop int64) *StringSliceCmd
 	ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd
-	ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd
-	ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd
-	ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd
+	ZRevRangeByScore(key string, opt *ZRangeBy) *StringSliceCmd
+	ZRevRangeByLex(key string, opt *ZRangeBy) *StringSliceCmd
+	ZRevRangeByScoreWithScores(key string, opt *ZRangeBy) *ZSliceCmd
 	ZRevRank(key, member string) *IntCmd
 	ZScore(key, member string) *FloatCmd
-	ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd
+	ZUnionStore(dest string, store *ZStore) *IntCmd
 	PFAdd(key string, els ...interface{}) *IntCmd
 	PFCount(keys ...string) *IntCmd
 	PFMerge(dest string, keys ...string) *StatusCmd
@@ -283,9 +289,9 @@ type Cmdable interface {
 	GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd
 	GeoPos(key string, members ...string) *GeoPosCmd
 	GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd
-	GeoRadiusRO(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd
+	GeoRadiusStore(key string, longitude, latitude float64, query *GeoRadiusQuery) *IntCmd
 	GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd
-	GeoRadiusByMemberRO(key, member string, query *GeoRadiusQuery) *GeoLocationCmd
+	GeoRadiusByMemberStore(key, member string, query *GeoRadiusQuery) *IntCmd
 	GeoDist(key string, member1, member2, unit string) *FloatCmd
 	GeoHash(key string, members ...string) *StringSliceCmd
 	ReadOnly() *StatusCmd
@@ -296,6 +302,7 @@ type Cmdable interface {
 type StatefulCmdable interface {
 	Cmdable
 	Auth(password string) *StatusCmd
+	AuthACL(username, password string) *StatusCmd
 	Select(index int) *StatusCmd
 	SwapDB(index1, index2 int) *StatusCmd
 	ClientSetName(name string) *BoolCmd
@@ -306,132 +313,127 @@ var _ Cmdable = (*Tx)(nil)
 var _ Cmdable = (*Ring)(nil)
 var _ Cmdable = (*ClusterClient)(nil)
 
-type cmdable struct {
-	process func(cmd Cmder) error
-}
-
-func (c *cmdable) setProcessor(fn func(Cmder) error) {
-	c.process = fn
-}
+type cmdable func(cmd Cmder) error
 
-type statefulCmdable struct {
-	cmdable
-	process func(cmd Cmder) error
-}
-
-func (c *statefulCmdable) setProcessor(fn func(Cmder) error) {
-	c.process = fn
-	c.cmdable.setProcessor(fn)
-}
+type statefulCmdable func(cmd Cmder) error
 
 //------------------------------------------------------------------------------
 
-func (c *statefulCmdable) Auth(password string) *StatusCmd {
+func (c statefulCmdable) Auth(password string) *StatusCmd {
 	cmd := NewStatusCmd("auth", password)
-	c.process(cmd)
+	_ = c(cmd)
+	return cmd
+}
+
+// Perform an AUTH command, using the given user and pass.
+// Should be used to authenticate the current connection with one of the connections defined in the ACL list
+// when connecting to a Redis 6.0 instance, or greater, that is using the Redis ACL system.
+func (c statefulCmdable) AuthACL(username, password string) *StatusCmd {
+	cmd := NewStatusCmd("auth", username, password)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Echo(message interface{}) *StringCmd {
+func (c cmdable) Echo(message interface{}) *StringCmd {
 	cmd := NewStringCmd("echo", message)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Ping() *StatusCmd {
+func (c cmdable) Ping() *StatusCmd {
 	cmd := NewStatusCmd("ping")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Wait(numSlaves int, timeout time.Duration) *IntCmd {
+func (c cmdable) Wait(numSlaves int, timeout time.Duration) *IntCmd {
 	cmd := NewIntCmd("wait", numSlaves, int(timeout/time.Millisecond))
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Quit() *StatusCmd {
+func (c cmdable) Quit() *StatusCmd {
 	panic("not implemented")
 }
 
-func (c *statefulCmdable) Select(index int) *StatusCmd {
+func (c statefulCmdable) Select(index int) *StatusCmd {
 	cmd := NewStatusCmd("select", index)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *statefulCmdable) SwapDB(index1, index2 int) *StatusCmd {
+func (c statefulCmdable) SwapDB(index1, index2 int) *StatusCmd {
 	cmd := NewStatusCmd("swapdb", index1, index2)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) Command() *CommandsInfoCmd {
+func (c cmdable) Command() *CommandsInfoCmd {
 	cmd := NewCommandsInfoCmd("command")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Del(keys ...string) *IntCmd {
+func (c cmdable) Del(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "del"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Unlink(keys ...string) *IntCmd {
+func (c cmdable) Unlink(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "unlink"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Dump(key string) *StringCmd {
+func (c cmdable) Dump(key string) *StringCmd {
 	cmd := NewStringCmd("dump", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Exists(keys ...string) *IntCmd {
+func (c cmdable) Exists(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "exists"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Expire(key string, expiration time.Duration) *BoolCmd {
+func (c cmdable) Expire(key string, expiration time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("expire", key, formatSec(expiration))
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ExpireAt(key string, tm time.Time) *BoolCmd {
+func (c cmdable) ExpireAt(key string, tm time.Time) *BoolCmd {
 	cmd := NewBoolCmd("expireat", key, tm.Unix())
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Keys(pattern string) *StringSliceCmd {
+func (c cmdable) Keys(pattern string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("keys", pattern)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Migrate(host, port, key string, db int64, timeout time.Duration) *StatusCmd {
+func (c cmdable) Migrate(host, port, key string, db int, timeout time.Duration) *StatusCmd {
 	cmd := NewStatusCmd(
 		"migrate",
 		host,
@@ -441,92 +443,92 @@ func (c *cmdable) Migrate(host, port, key string, db int64, timeout time.Duratio
 		formatMs(timeout),
 	)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Move(key string, db int64) *BoolCmd {
+func (c cmdable) Move(key string, db int) *BoolCmd {
 	cmd := NewBoolCmd("move", key, db)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ObjectRefCount(key string) *IntCmd {
+func (c cmdable) ObjectRefCount(key string) *IntCmd {
 	cmd := NewIntCmd("object", "refcount", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ObjectEncoding(key string) *StringCmd {
+func (c cmdable) ObjectEncoding(key string) *StringCmd {
 	cmd := NewStringCmd("object", "encoding", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ObjectIdleTime(key string) *DurationCmd {
+func (c cmdable) ObjectIdleTime(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Second, "object", "idletime", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Persist(key string) *BoolCmd {
+func (c cmdable) Persist(key string) *BoolCmd {
 	cmd := NewBoolCmd("persist", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PExpire(key string, expiration time.Duration) *BoolCmd {
+func (c cmdable) PExpire(key string, expiration time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("pexpire", key, formatMs(expiration))
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PExpireAt(key string, tm time.Time) *BoolCmd {
+func (c cmdable) PExpireAt(key string, tm time.Time) *BoolCmd {
 	cmd := NewBoolCmd(
 		"pexpireat",
 		key,
 		tm.UnixNano()/int64(time.Millisecond),
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PTTL(key string) *DurationCmd {
+func (c cmdable) PTTL(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Millisecond, "pttl", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RandomKey() *StringCmd {
+func (c cmdable) RandomKey() *StringCmd {
 	cmd := NewStringCmd("randomkey")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Rename(key, newkey string) *StatusCmd {
+func (c cmdable) Rename(key, newkey string) *StatusCmd {
 	cmd := NewStatusCmd("rename", key, newkey)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RenameNX(key, newkey string) *BoolCmd {
+func (c cmdable) RenameNX(key, newkey string) *BoolCmd {
 	cmd := NewBoolCmd("renamenx", key, newkey)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd {
+func (c cmdable) Restore(key string, ttl time.Duration, value string) *StatusCmd {
 	cmd := NewStatusCmd(
 		"restore",
 		key,
 		formatMs(ttl),
 		value,
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd {
+func (c cmdable) RestoreReplace(key string, ttl time.Duration, value string) *StatusCmd {
 	cmd := NewStatusCmd(
 		"restore",
 		key,
@@ -534,7 +536,7 @@ func (c *cmdable) RestoreReplace(key string, ttl time.Duration, value string) *S
 		value,
 		"replace",
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -566,52 +568,52 @@ func (sort *Sort) args(key string) []interface{} {
 	return args
 }
 
-func (c *cmdable) Sort(key string, sort *Sort) *StringSliceCmd {
+func (c cmdable) Sort(key string, sort *Sort) *StringSliceCmd {
 	cmd := NewStringSliceCmd(sort.args(key)...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SortStore(key, store string, sort *Sort) *IntCmd {
+func (c cmdable) SortStore(key, store string, sort *Sort) *IntCmd {
 	args := sort.args(key)
 	if store != "" {
 		args = append(args, "store", store)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SortInterfaces(key string, sort *Sort) *SliceCmd {
+func (c cmdable) SortInterfaces(key string, sort *Sort) *SliceCmd {
 	cmd := NewSliceCmd(sort.args(key)...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Touch(keys ...string) *IntCmd {
+func (c cmdable) Touch(keys ...string) *IntCmd {
 	args := make([]interface{}, len(keys)+1)
 	args[0] = "touch"
 	for i, key := range keys {
 		args[i+1] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) TTL(key string) *DurationCmd {
+func (c cmdable) TTL(key string) *DurationCmd {
 	cmd := NewDurationCmd(time.Second, "ttl", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Type(key string) *StatusCmd {
+func (c cmdable) Type(key string) *StatusCmd {
 	cmd := NewStatusCmd("type", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Scan(cursor uint64, match string, count int64) *ScanCmd {
+func (c cmdable) Scan(cursor uint64, match string, count int64) *ScanCmd {
 	args := []interface{}{"scan", cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -619,12 +621,12 @@ func (c *cmdable) Scan(cursor uint64, match string, count int64) *ScanCmd {
 	if count > 0 {
 		args = append(args, "count", count)
 	}
-	cmd := NewScanCmd(c.process, args...)
-	c.process(cmd)
+	cmd := NewScanCmd(c, args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SScan(key string, cursor uint64, match string, count int64) *ScanCmd {
+func (c cmdable) SScan(key string, cursor uint64, match string, count int64) *ScanCmd {
 	args := []interface{}{"sscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -632,12 +634,12 @@ func (c *cmdable) SScan(key string, cursor uint64, match string, count int64) *S
 	if count > 0 {
 		args = append(args, "count", count)
 	}
-	cmd := NewScanCmd(c.process, args...)
-	c.process(cmd)
+	cmd := NewScanCmd(c, args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HScan(key string, cursor uint64, match string, count int64) *ScanCmd {
+func (c cmdable) HScan(key string, cursor uint64, match string, count int64) *ScanCmd {
 	args := []interface{}{"hscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -645,12 +647,12 @@ func (c *cmdable) HScan(key string, cursor uint64, match string, count int64) *S
 	if count > 0 {
 		args = append(args, "count", count)
 	}
-	cmd := NewScanCmd(c.process, args...)
-	c.process(cmd)
+	cmd := NewScanCmd(c, args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZScan(key string, cursor uint64, match string, count int64) *ScanCmd {
+func (c cmdable) ZScan(key string, cursor uint64, match string, count int64) *ScanCmd {
 	args := []interface{}{"zscan", key, cursor}
 	if match != "" {
 		args = append(args, "match", match)
@@ -658,16 +660,16 @@ func (c *cmdable) ZScan(key string, cursor uint64, match string, count int64) *S
 	if count > 0 {
 		args = append(args, "count", count)
 	}
-	cmd := NewScanCmd(c.process, args...)
-	c.process(cmd)
+	cmd := NewScanCmd(c, args...)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) Append(key, value string) *IntCmd {
+func (c cmdable) Append(key, value string) *IntCmd {
 	cmd := NewIntCmd("append", key, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -675,7 +677,7 @@ type BitCount struct {
 	Start, End int64
 }
 
-func (c *cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
+func (c cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
 	args := []interface{}{"bitcount", key}
 	if bitCount != nil {
 		args = append(
@@ -685,11 +687,11 @@ func (c *cmdable) BitCount(key string, bitCount *BitCount) *IntCmd {
 		)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
+func (c cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
 	args := make([]interface{}, 3+len(keys))
 	args[0] = "bitop"
 	args[1] = op
@@ -698,27 +700,27 @@ func (c *cmdable) bitOp(op, destKey string, keys ...string) *IntCmd {
 		args[3+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) BitOpAnd(destKey string, keys ...string) *IntCmd {
+func (c cmdable) BitOpAnd(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("and", destKey, keys...)
 }
 
-func (c *cmdable) BitOpOr(destKey string, keys ...string) *IntCmd {
+func (c cmdable) BitOpOr(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("or", destKey, keys...)
 }
 
-func (c *cmdable) BitOpXor(destKey string, keys ...string) *IntCmd {
+func (c cmdable) BitOpXor(destKey string, keys ...string) *IntCmd {
 	return c.bitOp("xor", destKey, keys...)
 }
 
-func (c *cmdable) BitOpNot(destKey string, key string) *IntCmd {
+func (c cmdable) BitOpNot(destKey string, key string) *IntCmd {
 	return c.bitOp("not", destKey, key)
 }
 
-func (c *cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
+func (c cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
 	args := make([]interface{}, 3+len(pos))
 	args[0] = "bitpos"
 	args[1] = key
@@ -734,91 +736,109 @@ func (c *cmdable) BitPos(key string, bit int64, pos ...int64) *IntCmd {
 		panic("too many arguments")
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
+	return cmd
+}
+
+func (c cmdable) BitField(key string, args ...interface{}) *IntSliceCmd {
+	a := make([]interface{}, 0, 2+len(args))
+	a = append(a, "bitfield")
+	a = append(a, key)
+	a = append(a, args...)
+	cmd := NewIntSliceCmd(a...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Decr(key string) *IntCmd {
+func (c cmdable) Decr(key string) *IntCmd {
 	cmd := NewIntCmd("decr", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) DecrBy(key string, decrement int64) *IntCmd {
+func (c cmdable) DecrBy(key string, decrement int64) *IntCmd {
 	cmd := NewIntCmd("decrby", key, decrement)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `GET key` command. It returns redis.Nil error when key does not exist.
-func (c *cmdable) Get(key string) *StringCmd {
+func (c cmdable) Get(key string) *StringCmd {
 	cmd := NewStringCmd("get", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GetBit(key string, offset int64) *IntCmd {
+func (c cmdable) GetBit(key string, offset int64) *IntCmd {
 	cmd := NewIntCmd("getbit", key, offset)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GetRange(key string, start, end int64) *StringCmd {
+func (c cmdable) GetRange(key string, start, end int64) *StringCmd {
 	cmd := NewStringCmd("getrange", key, start, end)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GetSet(key string, value interface{}) *StringCmd {
+func (c cmdable) GetSet(key string, value interface{}) *StringCmd {
 	cmd := NewStringCmd("getset", key, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Incr(key string) *IntCmd {
+func (c cmdable) Incr(key string) *IntCmd {
 	cmd := NewIntCmd("incr", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) IncrBy(key string, value int64) *IntCmd {
+func (c cmdable) IncrBy(key string, value int64) *IntCmd {
 	cmd := NewIntCmd("incrby", key, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) IncrByFloat(key string, value float64) *FloatCmd {
+func (c cmdable) IncrByFloat(key string, value float64) *FloatCmd {
 	cmd := NewFloatCmd("incrbyfloat", key, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) MGet(keys ...string) *SliceCmd {
+func (c cmdable) MGet(keys ...string) *SliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "mget"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) MSet(pairs ...interface{}) *StatusCmd {
-	args := make([]interface{}, 1, 1+len(pairs))
+// MSet is like Set but accepts multiple values:
+//   - MSet("key1", "value1", "key2", "value2")
+//   - MSet([]string{"key1", "value1", "key2", "value2"})
+//   - MSet(map[string]interface{}{"key1": "value1", "key2": "value2"})
+func (c cmdable) MSet(values ...interface{}) *StatusCmd {
+	args := make([]interface{}, 1, 1+len(values))
 	args[0] = "mset"
-	args = appendArgs(args, pairs)
+	args = appendArgs(args, values)
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) MSetNX(pairs ...interface{}) *BoolCmd {
-	args := make([]interface{}, 1, 1+len(pairs))
+// MSetNX is like SetNX but accepts multiple values:
+//   - MSetNX("key1", "value1", "key2", "value2")
+//   - MSetNX([]string{"key1", "value1", "key2", "value2"})
+//   - MSetNX(map[string]interface{}{"key1": "value1", "key2": "value2"})
+func (c cmdable) MSetNX(values ...interface{}) *BoolCmd {
+	args := make([]interface{}, 1, 1+len(values))
 	args[0] = "msetnx"
-	args = appendArgs(args, pairs)
+	args = appendArgs(args, values)
 	cmd := NewBoolCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -826,8 +846,8 @@ func (c *cmdable) MSetNX(pairs ...interface{}) *BoolCmd {
 //
 // Use expiration for `SETEX`-like behavior.
 // Zero expiration means the key has no expiration time.
-func (c *cmdable) Set(key string, value interface{}, expiration time.Duration) *StatusCmd {
-	args := make([]interface{}, 3, 4)
+func (c cmdable) Set(key string, value interface{}, expiration time.Duration) *StatusCmd {
+	args := make([]interface{}, 3, 5)
 	args[0] = "set"
 	args[1] = key
 	args[2] = value
@@ -839,25 +859,25 @@ func (c *cmdable) Set(key string, value interface{}, expiration time.Duration) *
 		}
 	}
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SetBit(key string, offset int64, value int) *IntCmd {
+func (c cmdable) SetBit(key string, offset int64, value int) *IntCmd {
 	cmd := NewIntCmd(
 		"setbit",
 		key,
 		offset,
 		value,
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SET key value [expiration] NX` command.
 //
 // Zero expiration means the key has no expiration time.
-func (c *cmdable) SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd {
+func (c cmdable) SetNX(key string, value interface{}, expiration time.Duration) *BoolCmd {
 	var cmd *BoolCmd
 	if expiration == 0 {
 		// Use old `SETNX` to support old Redis versions.
@@ -869,14 +889,14 @@ func (c *cmdable) SetNX(key string, value interface{}, expiration time.Duration)
 			cmd = NewBoolCmd("set", key, value, "ex", formatSec(expiration), "nx")
 		}
 	}
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SET key value [expiration] XX` command.
 //
 // Zero expiration means the key has no expiration time.
-func (c *cmdable) SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd {
+func (c cmdable) SetXX(key string, value interface{}, expiration time.Duration) *BoolCmd {
 	var cmd *BoolCmd
 	if expiration == 0 {
 		cmd = NewBoolCmd("set", key, value, "xx")
@@ -887,25 +907,25 @@ func (c *cmdable) SetXX(key string, value interface{}, expiration time.Duration)
 			cmd = NewBoolCmd("set", key, value, "ex", formatSec(expiration), "xx")
 		}
 	}
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SetRange(key string, offset int64, value string) *IntCmd {
+func (c cmdable) SetRange(key string, offset int64, value string) *IntCmd {
 	cmd := NewIntCmd("setrange", key, offset, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) StrLen(key string) *IntCmd {
+func (c cmdable) StrLen(key string) *IntCmd {
 	cmd := NewIntCmd("strlen", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) HDel(key string, fields ...string) *IntCmd {
+func (c cmdable) HDel(key string, fields ...string) *IntCmd {
 	args := make([]interface{}, 2+len(fields))
 	args[0] = "hdel"
 	args[1] = key
@@ -913,53 +933,55 @@ func (c *cmdable) HDel(key string, fields ...string) *IntCmd {
 		args[2+i] = field
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HExists(key, field string) *BoolCmd {
+func (c cmdable) HExists(key, field string) *BoolCmd {
 	cmd := NewBoolCmd("hexists", key, field)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HGet(key, field string) *StringCmd {
+func (c cmdable) HGet(key, field string) *StringCmd {
 	cmd := NewStringCmd("hget", key, field)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HGetAll(key string) *StringStringMapCmd {
+func (c cmdable) HGetAll(key string) *StringStringMapCmd {
 	cmd := NewStringStringMapCmd("hgetall", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HIncrBy(key, field string, incr int64) *IntCmd {
+func (c cmdable) HIncrBy(key, field string, incr int64) *IntCmd {
 	cmd := NewIntCmd("hincrby", key, field, incr)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HIncrByFloat(key, field string, incr float64) *FloatCmd {
+func (c cmdable) HIncrByFloat(key, field string, incr float64) *FloatCmd {
 	cmd := NewFloatCmd("hincrbyfloat", key, field, incr)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HKeys(key string) *StringSliceCmd {
+func (c cmdable) HKeys(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("hkeys", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HLen(key string) *IntCmd {
+func (c cmdable) HLen(key string) *IntCmd {
 	cmd := NewIntCmd("hlen", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HMGet(key string, fields ...string) *SliceCmd {
+// HMGet returns the values for the specified fields in the hash stored at key.
+// It returns an interface{} to distinguish between empty string and nil value.
+func (c cmdable) HMGet(key string, fields ...string) *SliceCmd {
 	args := make([]interface{}, 2+len(fields))
 	args[0] = "hmget"
 	args[1] = key
@@ -967,46 +989,52 @@ func (c *cmdable) HMGet(key string, fields ...string) *SliceCmd {
 		args[2+i] = field
 	}
 	cmd := NewSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HMSet(key string, fields map[string]interface{}) *StatusCmd {
-	args := make([]interface{}, 2+len(fields)*2)
-	args[0] = "hmset"
+// HSet accepts values in following formats:
+//   - HMSet("myhash", "key1", "value1", "key2", "value2")
+//   - HMSet("myhash", []string{"key1", "value1", "key2", "value2"})
+//   - HMSet("myhash", map[string]interface{}{"key1": "value1", "key2": "value2"})
+//
+// Note that it requires Redis v4 for multiple field/value pairs support.
+func (c cmdable) HSet(key string, values ...interface{}) *IntCmd {
+	args := make([]interface{}, 2, 2+len(values))
+	args[0] = "hset"
 	args[1] = key
-	i := 2
-	for k, v := range fields {
-		args[i] = k
-		args[i+1] = v
-		i += 2
-	}
-	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	args = appendArgs(args, values)
+	cmd := NewIntCmd(args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HSet(key, field string, value interface{}) *BoolCmd {
-	cmd := NewBoolCmd("hset", key, field, value)
-	c.process(cmd)
+// HMSet is a deprecated version of HSet left for compatibility with Redis 3.
+func (c cmdable) HMSet(key string, values ...interface{}) *BoolCmd {
+	args := make([]interface{}, 2, 2+len(values))
+	args[0] = "hmset"
+	args[1] = key
+	args = appendArgs(args, values)
+	cmd := NewBoolCmd(args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HSetNX(key, field string, value interface{}) *BoolCmd {
+func (c cmdable) HSetNX(key, field string, value interface{}) *BoolCmd {
 	cmd := NewBoolCmd("hsetnx", key, field, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) HVals(key string) *StringSliceCmd {
+func (c cmdable) HVals(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("hvals", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
+func (c cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "blpop"
 	for i, key := range keys {
@@ -1015,11 +1043,11 @@ func (c *cmdable) BLPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args[len(args)-1] = formatSec(timeout)
 	cmd := NewStringSliceCmd(args...)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
+func (c cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "brpop"
 	for i, key := range keys {
@@ -1028,11 +1056,11 @@ func (c *cmdable) BRPop(timeout time.Duration, keys ...string) *StringSliceCmd {
 	args[len(keys)+1] = formatSec(timeout)
 	cmd := NewStringSliceCmd(args...)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) BRPopLPush(source, destination string, timeout time.Duration) *StringCmd {
+func (c cmdable) BRPopLPush(source, destination string, timeout time.Duration) *StringCmd {
 	cmd := NewStringCmd(
 		"brpoplpush",
 		source,
@@ -1040,154 +1068,162 @@ func (c *cmdable) BRPopLPush(source, destination string, timeout time.Duration)
 		formatSec(timeout),
 	)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LIndex(key string, index int64) *StringCmd {
+func (c cmdable) LIndex(key string, index int64) *StringCmd {
 	cmd := NewStringCmd("lindex", key, index)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LInsert(key, op string, pivot, value interface{}) *IntCmd {
+func (c cmdable) LInsert(key, op string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, op, pivot, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LInsertBefore(key string, pivot, value interface{}) *IntCmd {
+func (c cmdable) LInsertBefore(key string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, "before", pivot, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LInsertAfter(key string, pivot, value interface{}) *IntCmd {
+func (c cmdable) LInsertAfter(key string, pivot, value interface{}) *IntCmd {
 	cmd := NewIntCmd("linsert", key, "after", pivot, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LLen(key string) *IntCmd {
+func (c cmdable) LLen(key string) *IntCmd {
 	cmd := NewIntCmd("llen", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LPop(key string) *StringCmd {
+func (c cmdable) LPop(key string) *StringCmd {
 	cmd := NewStringCmd("lpop", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LPush(key string, values ...interface{}) *IntCmd {
+func (c cmdable) LPush(key string, values ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(values))
 	args[0] = "lpush"
 	args[1] = key
 	args = appendArgs(args, values)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LPushX(key string, value interface{}) *IntCmd {
-	cmd := NewIntCmd("lpushx", key, value)
-	c.process(cmd)
+func (c cmdable) LPushX(key string, values ...interface{}) *IntCmd {
+	args := make([]interface{}, 2, 2+len(values))
+	args[0] = "lpushx"
+	args[1] = key
+	args = appendArgs(args, values)
+	cmd := NewIntCmd(args...)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LRange(key string, start, stop int64) *StringSliceCmd {
+func (c cmdable) LRange(key string, start, stop int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd(
 		"lrange",
 		key,
 		start,
 		stop,
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LRem(key string, count int64, value interface{}) *IntCmd {
+func (c cmdable) LRem(key string, count int64, value interface{}) *IntCmd {
 	cmd := NewIntCmd("lrem", key, count, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LSet(key string, index int64, value interface{}) *StatusCmd {
+func (c cmdable) LSet(key string, index int64, value interface{}) *StatusCmd {
 	cmd := NewStatusCmd("lset", key, index, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LTrim(key string, start, stop int64) *StatusCmd {
+func (c cmdable) LTrim(key string, start, stop int64) *StatusCmd {
 	cmd := NewStatusCmd(
 		"ltrim",
 		key,
 		start,
 		stop,
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RPop(key string) *StringCmd {
+func (c cmdable) RPop(key string) *StringCmd {
 	cmd := NewStringCmd("rpop", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RPopLPush(source, destination string) *StringCmd {
+func (c cmdable) RPopLPush(source, destination string) *StringCmd {
 	cmd := NewStringCmd("rpoplpush", source, destination)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RPush(key string, values ...interface{}) *IntCmd {
+func (c cmdable) RPush(key string, values ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(values))
 	args[0] = "rpush"
 	args[1] = key
 	args = appendArgs(args, values)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) RPushX(key string, value interface{}) *IntCmd {
-	cmd := NewIntCmd("rpushx", key, value)
-	c.process(cmd)
+func (c cmdable) RPushX(key string, values ...interface{}) *IntCmd {
+	args := make([]interface{}, 2, 2+len(values))
+	args[0] = "rpushx"
+	args[1] = key
+	args = appendArgs(args, values)
+	cmd := NewIntCmd(args...)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) SAdd(key string, members ...interface{}) *IntCmd {
+func (c cmdable) SAdd(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(members))
 	args[0] = "sadd"
 	args[1] = key
 	args = appendArgs(args, members)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SCard(key string) *IntCmd {
+func (c cmdable) SCard(key string) *IntCmd {
 	cmd := NewIntCmd("scard", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SDiff(keys ...string) *StringSliceCmd {
+func (c cmdable) SDiff(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sdiff"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
+func (c cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sdiffstore"
 	args[1] = destination
@@ -1195,22 +1231,22 @@ func (c *cmdable) SDiffStore(destination string, keys ...string) *IntCmd {
 		args[2+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SInter(keys ...string) *StringSliceCmd {
+func (c cmdable) SInter(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sinter"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SInterStore(destination string, keys ...string) *IntCmd {
+func (c cmdable) SInterStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sinterstore"
 	args[1] = destination
@@ -1218,86 +1254,86 @@ func (c *cmdable) SInterStore(destination string, keys ...string) *IntCmd {
 		args[2+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SIsMember(key string, member interface{}) *BoolCmd {
+func (c cmdable) SIsMember(key string, member interface{}) *BoolCmd {
 	cmd := NewBoolCmd("sismember", key, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SMEMBERS key` command output as a slice
-func (c *cmdable) SMembers(key string) *StringSliceCmd {
+func (c cmdable) SMembers(key string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("smembers", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SMEMBERS key` command output as a map
-func (c *cmdable) SMembersMap(key string) *StringStructMapCmd {
+func (c cmdable) SMembersMap(key string) *StringStructMapCmd {
 	cmd := NewStringStructMapCmd("smembers", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SMove(source, destination string, member interface{}) *BoolCmd {
+func (c cmdable) SMove(source, destination string, member interface{}) *BoolCmd {
 	cmd := NewBoolCmd("smove", source, destination, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SPOP key` command.
-func (c *cmdable) SPop(key string) *StringCmd {
+func (c cmdable) SPop(key string) *StringCmd {
 	cmd := NewStringCmd("spop", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SPOP key count` command.
-func (c *cmdable) SPopN(key string, count int64) *StringSliceCmd {
+func (c cmdable) SPopN(key string, count int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("spop", key, count)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SRANDMEMBER key` command.
-func (c *cmdable) SRandMember(key string) *StringCmd {
+func (c cmdable) SRandMember(key string) *StringCmd {
 	cmd := NewStringCmd("srandmember", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `SRANDMEMBER key count` command.
-func (c *cmdable) SRandMemberN(key string, count int64) *StringSliceCmd {
+func (c cmdable) SRandMemberN(key string, count int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("srandmember", key, count)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SRem(key string, members ...interface{}) *IntCmd {
+func (c cmdable) SRem(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(members))
 	args[0] = "srem"
 	args[1] = key
 	args = appendArgs(args, members)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SUnion(keys ...string) *StringSliceCmd {
+func (c cmdable) SUnion(keys ...string) *StringSliceCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "sunion"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
+func (c cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "sunionstore"
 	args[1] = destination
@@ -1305,7 +1341,7 @@ func (c *cmdable) SUnionStore(destination string, keys ...string) *IntCmd {
 		args[2+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1319,7 +1355,7 @@ type XAddArgs struct {
 	Values       map[string]interface{}
 }
 
-func (c *cmdable) XAdd(a *XAddArgs) *StringCmd {
+func (c cmdable) XAdd(a *XAddArgs) *StringCmd {
 	args := make([]interface{}, 0, 6+len(a.Values)*2)
 	args = append(args, "xadd")
 	args = append(args, a.Stream)
@@ -1339,57 +1375,57 @@ func (c *cmdable) XAdd(a *XAddArgs) *StringCmd {
 	}
 
 	cmd := NewStringCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XDel(stream string, ids ...string) *IntCmd {
+func (c cmdable) XDel(stream string, ids ...string) *IntCmd {
 	args := []interface{}{"xdel", stream}
 	for _, id := range ids {
 		args = append(args, id)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XLen(stream string) *IntCmd {
+func (c cmdable) XLen(stream string) *IntCmd {
 	cmd := NewIntCmd("xlen", stream)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XRange(stream, start, stop string) *XMessageSliceCmd {
+func (c cmdable) XRange(stream, start, stop string) *XMessageSliceCmd {
 	cmd := NewXMessageSliceCmd("xrange", stream, start, stop)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
+func (c cmdable) XRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
 	cmd := NewXMessageSliceCmd("xrange", stream, start, stop, "count", count)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XRevRange(stream, start, stop string) *XMessageSliceCmd {
+func (c cmdable) XRevRange(stream, start, stop string) *XMessageSliceCmd {
 	cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XRevRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
+func (c cmdable) XRevRangeN(stream, start, stop string, count int64) *XMessageSliceCmd {
 	cmd := NewXMessageSliceCmd("xrevrange", stream, start, stop, "count", count)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 type XReadArgs struct {
-	Streams []string
+	Streams []string // list of streams and ids, e.g. stream1 stream2 id1 id2
 	Count   int64
 	Block   time.Duration
 }
 
-func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
+func (c cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
 	args := make([]interface{}, 0, 5+len(a.Streams))
 	args = append(args, "xread")
 	if a.Count > 0 {
@@ -1400,6 +1436,7 @@ func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
 		args = append(args, "block")
 		args = append(args, int64(a.Block/time.Millisecond))
 	}
+
 	args = append(args, "streams")
 	for _, s := range a.Streams {
 		args = append(args, s)
@@ -1409,58 +1446,57 @@ func (c *cmdable) XRead(a *XReadArgs) *XStreamSliceCmd {
 	if a.Block >= 0 {
 		cmd.setReadTimeout(a.Block)
 	}
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XReadStreams(streams ...string) *XStreamSliceCmd {
+func (c cmdable) XReadStreams(streams ...string) *XStreamSliceCmd {
 	return c.XRead(&XReadArgs{
 		Streams: streams,
 		Block:   -1,
 	})
 }
 
-func (c *cmdable) XGroupCreate(stream, group, start string) *StatusCmd {
+func (c cmdable) XGroupCreate(stream, group, start string) *StatusCmd {
 	cmd := NewStatusCmd("xgroup", "create", stream, group, start)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XGroupCreateMkStream(stream, group, start string) *StatusCmd {
+func (c cmdable) XGroupCreateMkStream(stream, group, start string) *StatusCmd {
 	cmd := NewStatusCmd("xgroup", "create", stream, group, start, "mkstream")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XGroupSetID(stream, group, start string) *StatusCmd {
+func (c cmdable) XGroupSetID(stream, group, start string) *StatusCmd {
 	cmd := NewStatusCmd("xgroup", "setid", stream, group, start)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XGroupDestroy(stream, group string) *IntCmd {
+func (c cmdable) XGroupDestroy(stream, group string) *IntCmd {
 	cmd := NewIntCmd("xgroup", "destroy", stream, group)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XGroupDelConsumer(stream, group, consumer string) *IntCmd {
+func (c cmdable) XGroupDelConsumer(stream, group, consumer string) *IntCmd {
 	cmd := NewIntCmd("xgroup", "delconsumer", stream, group, consumer)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 type XReadGroupArgs struct {
 	Group    string
 	Consumer string
-	// List of streams and ids.
-	Streams []string
-	Count   int64
-	Block   time.Duration
-	NoAck   bool
+	Streams  []string // list of streams and ids, e.g. stream1 stream2 id1 id2
+	Count    int64
+	Block    time.Duration
+	NoAck    bool
 }
 
-func (c *cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd {
+func (c cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd {
 	args := make([]interface{}, 0, 8+len(a.Streams))
 	args = append(args, "xreadgroup", "group", a.Group, a.Consumer)
 	if a.Count > 0 {
@@ -1481,23 +1517,23 @@ func (c *cmdable) XReadGroup(a *XReadGroupArgs) *XStreamSliceCmd {
 	if a.Block >= 0 {
 		cmd.setReadTimeout(a.Block)
 	}
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XAck(stream, group string, ids ...string) *IntCmd {
+func (c cmdable) XAck(stream, group string, ids ...string) *IntCmd {
 	args := []interface{}{"xack", stream, group}
 	for _, id := range ids {
 		args = append(args, id)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XPending(stream, group string) *XPendingCmd {
+func (c cmdable) XPending(stream, group string) *XPendingCmd {
 	cmd := NewXPendingCmd("xpending", stream, group)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1510,14 +1546,14 @@ type XPendingExtArgs struct {
 	Consumer string
 }
 
-func (c *cmdable) XPendingExt(a *XPendingExtArgs) *XPendingExtCmd {
+func (c cmdable) XPendingExt(a *XPendingExtArgs) *XPendingExtCmd {
 	args := make([]interface{}, 0, 7)
 	args = append(args, "xpending", a.Stream, a.Group, a.Start, a.End, a.Count)
 	if a.Consumer != "" {
 		args = append(args, a.Consumer)
 	}
 	cmd := NewXPendingExtCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1529,18 +1565,18 @@ type XClaimArgs struct {
 	Messages []string
 }
 
-func (c *cmdable) XClaim(a *XClaimArgs) *XMessageSliceCmd {
+func (c cmdable) XClaim(a *XClaimArgs) *XMessageSliceCmd {
 	args := xClaimArgs(a)
 	cmd := NewXMessageSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XClaimJustID(a *XClaimArgs) *StringSliceCmd {
+func (c cmdable) XClaimJustID(a *XClaimArgs) *StringSliceCmd {
 	args := xClaimArgs(a)
 	args = append(args, "justid")
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1557,15 +1593,21 @@ func xClaimArgs(a *XClaimArgs) []interface{} {
 	return args
 }
 
-func (c *cmdable) XTrim(key string, maxLen int64) *IntCmd {
+func (c cmdable) XTrim(key string, maxLen int64) *IntCmd {
 	cmd := NewIntCmd("xtrim", key, "maxlen", maxLen)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) XTrimApprox(key string, maxLen int64) *IntCmd {
+func (c cmdable) XTrimApprox(key string, maxLen int64) *IntCmd {
 	cmd := NewIntCmd("xtrim", key, "maxlen", "~", maxLen)
-	c.process(cmd)
+	_ = c(cmd)
+	return cmd
+}
+
+func (c cmdable) XInfoGroups(key string) *XInfoGroupsCmd {
+	cmd := NewXInfoGroupsCmd(key)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1585,13 +1627,14 @@ type ZWithKey struct {
 
 // ZStore is used as an arg to ZInterStore and ZUnionStore.
 type ZStore struct {
+	Keys    []string
 	Weights []float64
 	// Can be SUM, MIN or MAX.
 	Aggregate string
 }
 
 // Redis `BZPOPMAX key [key ...] timeout` command.
-func (c *cmdable) BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd {
+func (c cmdable) BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "bzpopmax"
 	for i, key := range keys {
@@ -1600,12 +1643,12 @@ func (c *cmdable) BZPopMax(timeout time.Duration, keys ...string) *ZWithKeyCmd {
 	args[len(args)-1] = formatSec(timeout)
 	cmd := NewZWithKeyCmd(args...)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `BZPOPMIN key [key ...] timeout` command.
-func (c *cmdable) BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd {
+func (c cmdable) BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd {
 	args := make([]interface{}, 1+len(keys)+1)
 	args[0] = "bzpopmin"
 	for i, key := range keys {
@@ -1614,22 +1657,22 @@ func (c *cmdable) BZPopMin(timeout time.Duration, keys ...string) *ZWithKeyCmd {
 	args[len(args)-1] = formatSec(timeout)
 	cmd := NewZWithKeyCmd(args...)
 	cmd.setReadTimeout(timeout)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) zAdd(a []interface{}, n int, members ...Z) *IntCmd {
+func (c cmdable) zAdd(a []interface{}, n int, members ...*Z) *IntCmd {
 	for i, m := range members {
 		a[n+2*i] = m.Score
 		a[n+2*i+1] = m.Member
 	}
 	cmd := NewIntCmd(a...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `ZADD key score member [score member ...]` command.
-func (c *cmdable) ZAdd(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAdd(key string, members ...*Z) *IntCmd {
 	const n = 2
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1] = "zadd", key
@@ -1637,7 +1680,7 @@ func (c *cmdable) ZAdd(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key NX score member [score member ...]` command.
-func (c *cmdable) ZAddNX(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAddNX(key string, members ...*Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "nx"
@@ -1645,7 +1688,7 @@ func (c *cmdable) ZAddNX(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key XX score member [score member ...]` command.
-func (c *cmdable) ZAddXX(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAddXX(key string, members ...*Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "xx"
@@ -1653,7 +1696,7 @@ func (c *cmdable) ZAddXX(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key CH score member [score member ...]` command.
-func (c *cmdable) ZAddCh(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAddCh(key string, members ...*Z) *IntCmd {
 	const n = 3
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2] = "zadd", key, "ch"
@@ -1661,7 +1704,7 @@ func (c *cmdable) ZAddCh(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key NX CH score member [score member ...]` command.
-func (c *cmdable) ZAddNXCh(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAddNXCh(key string, members ...*Z) *IntCmd {
 	const n = 4
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2], a[3] = "zadd", key, "nx", "ch"
@@ -1669,25 +1712,25 @@ func (c *cmdable) ZAddNXCh(key string, members ...Z) *IntCmd {
 }
 
 // Redis `ZADD key XX CH score member [score member ...]` command.
-func (c *cmdable) ZAddXXCh(key string, members ...Z) *IntCmd {
+func (c cmdable) ZAddXXCh(key string, members ...*Z) *IntCmd {
 	const n = 4
 	a := make([]interface{}, n+2*len(members))
 	a[0], a[1], a[2], a[3] = "zadd", key, "xx", "ch"
 	return c.zAdd(a, n, members...)
 }
 
-func (c *cmdable) zIncr(a []interface{}, n int, members ...Z) *FloatCmd {
+func (c cmdable) zIncr(a []interface{}, n int, members ...*Z) *FloatCmd {
 	for i, m := range members {
 		a[n+2*i] = m.Score
 		a[n+2*i+1] = m.Member
 	}
 	cmd := NewFloatCmd(a...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Redis `ZADD key INCR score member` command.
-func (c *cmdable) ZIncr(key string, member Z) *FloatCmd {
+func (c cmdable) ZIncr(key string, member *Z) *FloatCmd {
 	const n = 3
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2] = "zadd", key, "incr"
@@ -1695,7 +1738,7 @@ func (c *cmdable) ZIncr(key string, member Z) *FloatCmd {
 }
 
 // Redis `ZADD key NX INCR score member` command.
-func (c *cmdable) ZIncrNX(key string, member Z) *FloatCmd {
+func (c cmdable) ZIncrNX(key string, member *Z) *FloatCmd {
 	const n = 4
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2], a[3] = "zadd", key, "incr", "nx"
@@ -1703,43 +1746,43 @@ func (c *cmdable) ZIncrNX(key string, member Z) *FloatCmd {
 }
 
 // Redis `ZADD key XX INCR score member` command.
-func (c *cmdable) ZIncrXX(key string, member Z) *FloatCmd {
+func (c cmdable) ZIncrXX(key string, member *Z) *FloatCmd {
 	const n = 4
 	a := make([]interface{}, n+2)
 	a[0], a[1], a[2], a[3] = "zadd", key, "incr", "xx"
 	return c.zIncr(a, n, member)
 }
 
-func (c *cmdable) ZCard(key string) *IntCmd {
+func (c cmdable) ZCard(key string) *IntCmd {
 	cmd := NewIntCmd("zcard", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZCount(key, min, max string) *IntCmd {
+func (c cmdable) ZCount(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zcount", key, min, max)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZLexCount(key, min, max string) *IntCmd {
+func (c cmdable) ZLexCount(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zlexcount", key, min, max)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZIncrBy(key string, increment float64, member string) *FloatCmd {
+func (c cmdable) ZIncrBy(key string, increment float64, member string) *FloatCmd {
 	cmd := NewFloatCmd("zincrby", key, increment, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZInterStore(destination string, store ZStore, keys ...string) *IntCmd {
-	args := make([]interface{}, 3+len(keys))
+func (c cmdable) ZInterStore(destination string, store *ZStore) *IntCmd {
+	args := make([]interface{}, 3+len(store.Keys))
 	args[0] = "zinterstore"
 	args[1] = destination
-	args[2] = len(keys)
-	for i, key := range keys {
+	args[2] = len(store.Keys)
+	for i, key := range store.Keys {
 		args[3+i] = key
 	}
 	if len(store.Weights) > 0 {
@@ -1752,11 +1795,11 @@ func (c *cmdable) ZInterStore(destination string, store ZStore, keys ...string)
 		args = append(args, "aggregate", store.Aggregate)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZPopMax(key string, count ...int64) *ZSliceCmd {
+func (c cmdable) ZPopMax(key string, count ...int64) *ZSliceCmd {
 	args := []interface{}{
 		"zpopmax",
 		key,
@@ -1772,11 +1815,11 @@ func (c *cmdable) ZPopMax(key string, count ...int64) *ZSliceCmd {
 	}
 
 	cmd := NewZSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZPopMin(key string, count ...int64) *ZSliceCmd {
+func (c cmdable) ZPopMin(key string, count ...int64) *ZSliceCmd {
 	args := []interface{}{
 		"zpopmin",
 		key,
@@ -1792,11 +1835,11 @@ func (c *cmdable) ZPopMin(key string, count ...int64) *ZSliceCmd {
 	}
 
 	cmd := NewZSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) zRange(key string, start, stop int64, withScores bool) *StringSliceCmd {
+func (c cmdable) zRange(key string, start, stop int64, withScores bool) *StringSliceCmd {
 	args := []interface{}{
 		"zrange",
 		key,
@@ -1807,17 +1850,17 @@ func (c *cmdable) zRange(key string, start, stop int64, withScores bool) *String
 		args = append(args, "withscores")
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRange(key string, start, stop int64) *StringSliceCmd {
+func (c cmdable) ZRange(key string, start, stop int64) *StringSliceCmd {
 	return c.zRange(key, start, stop, false)
 }
 
-func (c *cmdable) ZRangeWithScores(key string, start, stop int64) *ZSliceCmd {
+func (c cmdable) ZRangeWithScores(key string, start, stop int64) *ZSliceCmd {
 	cmd := NewZSliceCmd("zrange", key, start, stop, "withscores")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
@@ -1826,7 +1869,7 @@ type ZRangeBy struct {
 	Offset, Count int64
 }
 
-func (c *cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *StringSliceCmd {
+func (c cmdable) zRangeBy(zcmd, key string, opt *ZRangeBy, withScores bool) *StringSliceCmd {
 	args := []interface{}{zcmd, key, opt.Min, opt.Max}
 	if withScores {
 		args = append(args, "withscores")
@@ -1840,19 +1883,19 @@ func (c *cmdable) zRangeBy(zcmd, key string, opt ZRangeBy, withScores bool) *Str
 		)
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
+func (c cmdable) ZRangeByScore(key string, opt *ZRangeBy) *StringSliceCmd {
 	return c.zRangeBy("zrangebyscore", key, opt, false)
 }
 
-func (c *cmdable) ZRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
+func (c cmdable) ZRangeByLex(key string, opt *ZRangeBy) *StringSliceCmd {
 	return c.zRangeBy("zrangebylex", key, opt, false)
 }
 
-func (c *cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
+func (c cmdable) ZRangeByScoreWithScores(key string, opt *ZRangeBy) *ZSliceCmd {
 	args := []interface{}{"zrangebyscore", key, opt.Min, opt.Max, "withscores"}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1863,62 +1906,62 @@ func (c *cmdable) ZRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
 		)
 	}
 	cmd := NewZSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRank(key, member string) *IntCmd {
+func (c cmdable) ZRank(key, member string) *IntCmd {
 	cmd := NewIntCmd("zrank", key, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRem(key string, members ...interface{}) *IntCmd {
+func (c cmdable) ZRem(key string, members ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(members))
 	args[0] = "zrem"
 	args[1] = key
 	args = appendArgs(args, members)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd {
+func (c cmdable) ZRemRangeByRank(key string, start, stop int64) *IntCmd {
 	cmd := NewIntCmd(
 		"zremrangebyrank",
 		key,
 		start,
 		stop,
 	)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRemRangeByScore(key, min, max string) *IntCmd {
+func (c cmdable) ZRemRangeByScore(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zremrangebyscore", key, min, max)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRemRangeByLex(key, min, max string) *IntCmd {
+func (c cmdable) ZRemRangeByLex(key, min, max string) *IntCmd {
 	cmd := NewIntCmd("zremrangebylex", key, min, max)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRevRange(key string, start, stop int64) *StringSliceCmd {
+func (c cmdable) ZRevRange(key string, start, stop int64) *StringSliceCmd {
 	cmd := NewStringSliceCmd("zrevrange", key, start, stop)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd {
+func (c cmdable) ZRevRangeWithScores(key string, start, stop int64) *ZSliceCmd {
 	cmd := NewZSliceCmd("zrevrange", key, start, stop, "withscores")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd {
+func (c cmdable) zRevRangeBy(zcmd, key string, opt *ZRangeBy) *StringSliceCmd {
 	args := []interface{}{zcmd, key, opt.Max, opt.Min}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1929,19 +1972,19 @@ func (c *cmdable) zRevRangeBy(zcmd, key string, opt ZRangeBy) *StringSliceCmd {
 		)
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRevRangeByScore(key string, opt ZRangeBy) *StringSliceCmd {
+func (c cmdable) ZRevRangeByScore(key string, opt *ZRangeBy) *StringSliceCmd {
 	return c.zRevRangeBy("zrevrangebyscore", key, opt)
 }
 
-func (c *cmdable) ZRevRangeByLex(key string, opt ZRangeBy) *StringSliceCmd {
+func (c cmdable) ZRevRangeByLex(key string, opt *ZRangeBy) *StringSliceCmd {
 	return c.zRevRangeBy("zrevrangebylex", key, opt)
 }
 
-func (c *cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCmd {
+func (c cmdable) ZRevRangeByScoreWithScores(key string, opt *ZRangeBy) *ZSliceCmd {
 	args := []interface{}{"zrevrangebyscore", key, opt.Max, opt.Min, "withscores"}
 	if opt.Offset != 0 || opt.Count != 0 {
 		args = append(
@@ -1952,28 +1995,28 @@ func (c *cmdable) ZRevRangeByScoreWithScores(key string, opt ZRangeBy) *ZSliceCm
 		)
 	}
 	cmd := NewZSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZRevRank(key, member string) *IntCmd {
+func (c cmdable) ZRevRank(key, member string) *IntCmd {
 	cmd := NewIntCmd("zrevrank", key, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZScore(key, member string) *FloatCmd {
+func (c cmdable) ZScore(key, member string) *FloatCmd {
 	cmd := NewFloatCmd("zscore", key, member)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd {
-	args := make([]interface{}, 3+len(keys))
+func (c cmdable) ZUnionStore(dest string, store *ZStore) *IntCmd {
+	args := make([]interface{}, 3+len(store.Keys))
 	args[0] = "zunionstore"
 	args[1] = dest
-	args[2] = len(keys)
-	for i, key := range keys {
+	args[2] = len(store.Keys)
+	for i, key := range store.Keys {
 		args[3+i] = key
 	}
 	if len(store.Weights) > 0 {
@@ -1986,34 +2029,34 @@ func (c *cmdable) ZUnionStore(dest string, store ZStore, keys ...string) *IntCmd
 		args = append(args, "aggregate", store.Aggregate)
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) PFAdd(key string, els ...interface{}) *IntCmd {
+func (c cmdable) PFAdd(key string, els ...interface{}) *IntCmd {
 	args := make([]interface{}, 2, 2+len(els))
 	args[0] = "pfadd"
 	args[1] = key
 	args = appendArgs(args, els)
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PFCount(keys ...string) *IntCmd {
+func (c cmdable) PFCount(keys ...string) *IntCmd {
 	args := make([]interface{}, 1+len(keys))
 	args[0] = "pfcount"
 	for i, key := range keys {
 		args[1+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
+func (c cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "pfmerge"
 	args[1] = dest
@@ -2021,33 +2064,33 @@ func (c *cmdable) PFMerge(dest string, keys ...string) *StatusCmd {
 		args[2+i] = key
 	}
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) BgRewriteAOF() *StatusCmd {
+func (c cmdable) BgRewriteAOF() *StatusCmd {
 	cmd := NewStatusCmd("bgrewriteaof")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) BgSave() *StatusCmd {
+func (c cmdable) BgSave() *StatusCmd {
 	cmd := NewStatusCmd("bgsave")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientKill(ipPort string) *StatusCmd {
+func (c cmdable) ClientKill(ipPort string) *StatusCmd {
 	cmd := NewStatusCmd("client", "kill", ipPort)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // ClientKillByFilter is new style synx, while the ClientKill is old
 // CLIENT KILL <option> [value] ... <option> [value]
-func (c *cmdable) ClientKillByFilter(keys ...string) *IntCmd {
+func (c cmdable) ClientKillByFilter(keys ...string) *IntCmd {
 	args := make([]interface{}, 2+len(keys))
 	args[0] = "client"
 	args[1] = "kill"
@@ -2055,141 +2098,136 @@ func (c *cmdable) ClientKillByFilter(keys ...string) *IntCmd {
 		args[2+i] = key
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientList() *StringCmd {
+func (c cmdable) ClientList() *StringCmd {
 	cmd := NewStringCmd("client", "list")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientPause(dur time.Duration) *BoolCmd {
+func (c cmdable) ClientPause(dur time.Duration) *BoolCmd {
 	cmd := NewBoolCmd("client", "pause", formatMs(dur))
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientID() *IntCmd {
+func (c cmdable) ClientID() *IntCmd {
 	cmd := NewIntCmd("client", "id")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientUnblock(id int64) *IntCmd {
+func (c cmdable) ClientUnblock(id int64) *IntCmd {
 	cmd := NewIntCmd("client", "unblock", id)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClientUnblockWithError(id int64) *IntCmd {
+func (c cmdable) ClientUnblockWithError(id int64) *IntCmd {
 	cmd := NewIntCmd("client", "unblock", id, "error")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // ClientSetName assigns a name to the connection.
-func (c *statefulCmdable) ClientSetName(name string) *BoolCmd {
+func (c statefulCmdable) ClientSetName(name string) *BoolCmd {
 	cmd := NewBoolCmd("client", "setname", name)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // ClientGetName returns the name of the connection.
-func (c *cmdable) ClientGetName() *StringCmd {
+func (c cmdable) ClientGetName() *StringCmd {
 	cmd := NewStringCmd("client", "getname")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ConfigGet(parameter string) *SliceCmd {
+func (c cmdable) ConfigGet(parameter string) *SliceCmd {
 	cmd := NewSliceCmd("config", "get", parameter)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ConfigResetStat() *StatusCmd {
+func (c cmdable) ConfigResetStat() *StatusCmd {
 	cmd := NewStatusCmd("config", "resetstat")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ConfigSet(parameter, value string) *StatusCmd {
+func (c cmdable) ConfigSet(parameter, value string) *StatusCmd {
 	cmd := NewStatusCmd("config", "set", parameter, value)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ConfigRewrite() *StatusCmd {
+func (c cmdable) ConfigRewrite() *StatusCmd {
 	cmd := NewStatusCmd("config", "rewrite")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 // Deperecated. Use DBSize instead.
-func (c *cmdable) DbSize() *IntCmd {
+func (c cmdable) DbSize() *IntCmd {
 	return c.DBSize()
 }
 
-func (c *cmdable) DBSize() *IntCmd {
+func (c cmdable) DBSize() *IntCmd {
 	cmd := NewIntCmd("dbsize")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) FlushAll() *StatusCmd {
+func (c cmdable) FlushAll() *StatusCmd {
 	cmd := NewStatusCmd("flushall")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) FlushAllAsync() *StatusCmd {
+func (c cmdable) FlushAllAsync() *StatusCmd {
 	cmd := NewStatusCmd("flushall", "async")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-// Deprecated. Use FlushDB instead.
-func (c *cmdable) FlushDb() *StatusCmd {
-	return c.FlushDB()
-}
-
-func (c *cmdable) FlushDB() *StatusCmd {
+func (c cmdable) FlushDB() *StatusCmd {
 	cmd := NewStatusCmd("flushdb")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) FlushDBAsync() *StatusCmd {
+func (c cmdable) FlushDBAsync() *StatusCmd {
 	cmd := NewStatusCmd("flushdb", "async")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Info(section ...string) *StringCmd {
+func (c cmdable) Info(section ...string) *StringCmd {
 	args := []interface{}{"info"}
 	if len(section) > 0 {
 		args = append(args, section[0])
 	}
 	cmd := NewStringCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) LastSave() *IntCmd {
+func (c cmdable) LastSave() *IntCmd {
 	cmd := NewIntCmd("lastsave")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) Save() *StatusCmd {
+func (c cmdable) Save() *StatusCmd {
 	cmd := NewStatusCmd("save")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) shutdown(modifier string) *StatusCmd {
+func (c cmdable) shutdown(modifier string) *StatusCmd {
 	var args []interface{}
 	if modifier == "" {
 		args = []interface{}{"shutdown"}
@@ -2197,7 +2235,7 @@ func (c *cmdable) shutdown(modifier string) *StatusCmd {
 		args = []interface{}{"shutdown", modifier}
 	}
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	if err := cmd.Err(); err != nil {
 		if err == io.EOF {
 			// Server quit as expected.
@@ -2211,41 +2249,41 @@ func (c *cmdable) shutdown(modifier string) *StatusCmd {
 	return cmd
 }
 
-func (c *cmdable) Shutdown() *StatusCmd {
+func (c cmdable) Shutdown() *StatusCmd {
 	return c.shutdown("")
 }
 
-func (c *cmdable) ShutdownSave() *StatusCmd {
+func (c cmdable) ShutdownSave() *StatusCmd {
 	return c.shutdown("save")
 }
 
-func (c *cmdable) ShutdownNoSave() *StatusCmd {
+func (c cmdable) ShutdownNoSave() *StatusCmd {
 	return c.shutdown("nosave")
 }
 
-func (c *cmdable) SlaveOf(host, port string) *StatusCmd {
+func (c cmdable) SlaveOf(host, port string) *StatusCmd {
 	cmd := NewStatusCmd("slaveof", host, port)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) SlowLog() {
+func (c cmdable) SlowLog() {
 	panic("not implemented")
 }
 
-func (c *cmdable) Sync() {
+func (c cmdable) Sync() {
 	panic("not implemented")
 }
 
-func (c *cmdable) Time() *TimeCmd {
+func (c cmdable) Time() *TimeCmd {
 	cmd := NewTimeCmd("time")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
+func (c cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
 	cmdArgs := make([]interface{}, 3+len(keys), 3+len(keys)+len(args))
 	cmdArgs[0] = "eval"
 	cmdArgs[1] = script
@@ -2255,11 +2293,11 @@ func (c *cmdable) Eval(script string, keys []string, args ...interface{}) *Cmd {
 	}
 	cmdArgs = appendArgs(cmdArgs, args)
 	cmd := NewCmd(cmdArgs...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd {
+func (c cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd {
 	cmdArgs := make([]interface{}, 3+len(keys), 3+len(keys)+len(args))
 	cmdArgs[0] = "evalsha"
 	cmdArgs[1] = sha1
@@ -2269,11 +2307,11 @@ func (c *cmdable) EvalSha(sha1 string, keys []string, args ...interface{}) *Cmd
 	}
 	cmdArgs = appendArgs(cmdArgs, args)
 	cmd := NewCmd(cmdArgs...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ScriptExists(hashes ...string) *BoolSliceCmd {
+func (c cmdable) ScriptExists(hashes ...string) *BoolSliceCmd {
 	args := make([]interface{}, 2+len(hashes))
 	args[0] = "script"
 	args[1] = "exists"
@@ -2281,56 +2319,56 @@ func (c *cmdable) ScriptExists(hashes ...string) *BoolSliceCmd {
 		args[2+i] = hash
 	}
 	cmd := NewBoolSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ScriptFlush() *StatusCmd {
+func (c cmdable) ScriptFlush() *StatusCmd {
 	cmd := NewStatusCmd("script", "flush")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ScriptKill() *StatusCmd {
+func (c cmdable) ScriptKill() *StatusCmd {
 	cmd := NewStatusCmd("script", "kill")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ScriptLoad(script string) *StringCmd {
+func (c cmdable) ScriptLoad(script string) *StringCmd {
 	cmd := NewStringCmd("script", "load", script)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) DebugObject(key string) *StringCmd {
+func (c cmdable) DebugObject(key string) *StringCmd {
 	cmd := NewStringCmd("debug", "object", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
 // Publish posts the message to the channel.
-func (c *cmdable) Publish(channel string, message interface{}) *IntCmd {
+func (c cmdable) Publish(channel string, message interface{}) *IntCmd {
 	cmd := NewIntCmd("publish", channel, message)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PubSubChannels(pattern string) *StringSliceCmd {
+func (c cmdable) PubSubChannels(pattern string) *StringSliceCmd {
 	args := []interface{}{"pubsub", "channels"}
 	if pattern != "*" {
 		args = append(args, pattern)
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
+func (c cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
 	args := make([]interface{}, 2+len(channels))
 	args[0] = "pubsub"
 	args[1] = "numsub"
@@ -2338,91 +2376,91 @@ func (c *cmdable) PubSubNumSub(channels ...string) *StringIntMapCmd {
 		args[2+i] = channel
 	}
 	cmd := NewStringIntMapCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) PubSubNumPat() *IntCmd {
+func (c cmdable) PubSubNumPat() *IntCmd {
 	cmd := NewIntCmd("pubsub", "numpat")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) ClusterSlots() *ClusterSlotsCmd {
+func (c cmdable) ClusterSlots() *ClusterSlotsCmd {
 	cmd := NewClusterSlotsCmd("cluster", "slots")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterNodes() *StringCmd {
+func (c cmdable) ClusterNodes() *StringCmd {
 	cmd := NewStringCmd("cluster", "nodes")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterMeet(host, port string) *StatusCmd {
+func (c cmdable) ClusterMeet(host, port string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "meet", host, port)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterForget(nodeID string) *StatusCmd {
+func (c cmdable) ClusterForget(nodeID string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "forget", nodeID)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterReplicate(nodeID string) *StatusCmd {
+func (c cmdable) ClusterReplicate(nodeID string) *StatusCmd {
 	cmd := NewStatusCmd("cluster", "replicate", nodeID)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterResetSoft() *StatusCmd {
+func (c cmdable) ClusterResetSoft() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "reset", "soft")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterResetHard() *StatusCmd {
+func (c cmdable) ClusterResetHard() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "reset", "hard")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterInfo() *StringCmd {
+func (c cmdable) ClusterInfo() *StringCmd {
 	cmd := NewStringCmd("cluster", "info")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterKeySlot(key string) *IntCmd {
+func (c cmdable) ClusterKeySlot(key string) *IntCmd {
 	cmd := NewIntCmd("cluster", "keyslot", key)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterGetKeysInSlot(slot int, count int) *StringSliceCmd {
+func (c cmdable) ClusterGetKeysInSlot(slot int, count int) *StringSliceCmd {
 	cmd := NewStringSliceCmd("cluster", "getkeysinslot", slot, count)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterCountFailureReports(nodeID string) *IntCmd {
+func (c cmdable) ClusterCountFailureReports(nodeID string) *IntCmd {
 	cmd := NewIntCmd("cluster", "count-failure-reports", nodeID)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterCountKeysInSlot(slot int) *IntCmd {
+func (c cmdable) ClusterCountKeysInSlot(slot int) *IntCmd {
 	cmd := NewIntCmd("cluster", "countkeysinslot", slot)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
+func (c cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
 	args := make([]interface{}, 2+len(slots))
 	args[0] = "cluster"
 	args[1] = "delslots"
@@ -2430,11 +2468,11 @@ func (c *cmdable) ClusterDelSlots(slots ...int) *StatusCmd {
 		args[2+i] = slot
 	}
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
+func (c cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
 	size := max - min + 1
 	slots := make([]int, size)
 	for i := 0; i < size; i++ {
@@ -2443,37 +2481,37 @@ func (c *cmdable) ClusterDelSlotsRange(min, max int) *StatusCmd {
 	return c.ClusterDelSlots(slots...)
 }
 
-func (c *cmdable) ClusterSaveConfig() *StatusCmd {
+func (c cmdable) ClusterSaveConfig() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "saveconfig")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterSlaves(nodeID string) *StringSliceCmd {
+func (c cmdable) ClusterSlaves(nodeID string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("cluster", "slaves", nodeID)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ReadOnly() *StatusCmd {
+func (c cmdable) ReadOnly() *StatusCmd {
 	cmd := NewStatusCmd("readonly")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ReadWrite() *StatusCmd {
+func (c cmdable) ReadWrite() *StatusCmd {
 	cmd := NewStatusCmd("readwrite")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterFailover() *StatusCmd {
+func (c cmdable) ClusterFailover() *StatusCmd {
 	cmd := NewStatusCmd("cluster", "failover")
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
+func (c cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
 	args := make([]interface{}, 2+len(slots))
 	args[0] = "cluster"
 	args[1] = "addslots"
@@ -2481,11 +2519,11 @@ func (c *cmdable) ClusterAddSlots(slots ...int) *StatusCmd {
 		args[2+i] = num
 	}
 	cmd := NewStatusCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
+func (c cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
 	size := max - min + 1
 	slots := make([]int, size)
 	for i := 0; i < size; i++ {
@@ -2496,7 +2534,7 @@ func (c *cmdable) ClusterAddSlotsRange(min, max int) *StatusCmd {
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
+func (c cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
 	args := make([]interface{}, 2+3*len(geoLocation))
 	args[0] = "geoadd"
 	args[1] = key
@@ -2506,44 +2544,66 @@ func (c *cmdable) GeoAdd(key string, geoLocation ...*GeoLocation) *IntCmd {
 		args[2+3*i+2] = eachLoc.Name
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd {
-	cmd := NewGeoLocationCmd(query, "georadius", key, longitude, latitude)
-	c.process(cmd)
+// GeoRadius is a read-only GEORADIUS_RO command.
+func (c cmdable) GeoRadius(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd {
+	cmd := NewGeoLocationCmd(query, "georadius_ro", key, longitude, latitude)
+	if query.Store != "" || query.StoreDist != "" {
+		cmd.SetErr(errors.New("GeoRadius does not support Store or StoreDist"))
+		return cmd
+	}
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoRadiusRO(key string, longitude, latitude float64, query *GeoRadiusQuery) *GeoLocationCmd {
-	cmd := NewGeoLocationCmd(query, "georadius_ro", key, longitude, latitude)
-	c.process(cmd)
+// GeoRadiusStore is a writing GEORADIUS command.
+func (c cmdable) GeoRadiusStore(key string, longitude, latitude float64, query *GeoRadiusQuery) *IntCmd {
+	args := geoLocationArgs(query, "georadius", key, longitude, latitude)
+	cmd := NewIntCmd(args...)
+	if query.Store == "" && query.StoreDist == "" {
+		cmd.SetErr(errors.New("GeoRadiusStore requires Store or StoreDist"))
+		return cmd
+	}
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd {
-	cmd := NewGeoLocationCmd(query, "georadiusbymember", key, member)
-	c.process(cmd)
+// GeoRadius is a read-only GEORADIUSBYMEMBER_RO command.
+func (c cmdable) GeoRadiusByMember(key, member string, query *GeoRadiusQuery) *GeoLocationCmd {
+	cmd := NewGeoLocationCmd(query, "georadiusbymember_ro", key, member)
+	if query.Store != "" || query.StoreDist != "" {
+		cmd.SetErr(errors.New("GeoRadiusByMember does not support Store or StoreDist"))
+		return cmd
+	}
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoRadiusByMemberRO(key, member string, query *GeoRadiusQuery) *GeoLocationCmd {
-	cmd := NewGeoLocationCmd(query, "georadiusbymember_ro", key, member)
-	c.process(cmd)
+// GeoRadiusByMemberStore is a writing GEORADIUSBYMEMBER command.
+func (c cmdable) GeoRadiusByMemberStore(key, member string, query *GeoRadiusQuery) *IntCmd {
+	args := geoLocationArgs(query, "georadiusbymember", key, member)
+	cmd := NewIntCmd(args...)
+	if query.Store == "" && query.StoreDist == "" {
+		cmd.SetErr(errors.New("GeoRadiusByMemberStore requires Store or StoreDist"))
+		return cmd
+	}
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoDist(key string, member1, member2, unit string) *FloatCmd {
+func (c cmdable) GeoDist(key string, member1, member2, unit string) *FloatCmd {
 	if unit == "" {
 		unit = "km"
 	}
 	cmd := NewFloatCmd("geodist", key, member1, member2, unit)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
+func (c cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "geohash"
 	args[1] = key
@@ -2551,11 +2611,11 @@ func (c *cmdable) GeoHash(key string, members ...string) *StringSliceCmd {
 		args[2+i] = member
 	}
 	cmd := NewStringSliceCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
-func (c *cmdable) GeoPos(key string, members ...string) *GeoPosCmd {
+func (c cmdable) GeoPos(key string, members ...string) *GeoPosCmd {
 	args := make([]interface{}, 2+len(members))
 	args[0] = "geopos"
 	args[1] = key
@@ -2563,13 +2623,13 @@ func (c *cmdable) GeoPos(key string, members ...string) *GeoPosCmd {
 		args[2+i] = member
 	}
 	cmd := NewGeoPosCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
 
 //------------------------------------------------------------------------------
 
-func (c *cmdable) MemoryUsage(key string, samples ...int) *IntCmd {
+func (c cmdable) MemoryUsage(key string, samples ...int) *IntCmd {
 	args := []interface{}{"memory", "usage", key}
 	if len(samples) > 0 {
 		if len(samples) != 1 {
@@ -2578,6 +2638,6 @@ func (c *cmdable) MemoryUsage(key string, samples ...int) *IntCmd {
 		args = append(args, "SAMPLES", samples[0])
 	}
 	cmd := NewIntCmd(args...)
-	c.process(cmd)
+	_ = c(cmd)
 	return cmd
 }
diff --git a/vendor/github.com/go-redis/redis/doc.go b/vendor/github.com/go-redis/redis/v7/doc.go
index 55262533a6..55262533a6 100644
--- a/vendor/github.com/go-redis/redis/doc.go
+++ b/vendor/github.com/go-redis/redis/v7/doc.go
diff --git a/vendor/github.com/go-redis/redis/v7/error.go b/vendor/github.com/go-redis/redis/v7/error.go
new file mode 100644
index 0000000000..0ffaca9f8f
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/error.go
@@ -0,0 +1,108 @@
+package redis
+
+import (
+	"context"
+	"io"
+	"net"
+	"strings"
+
+	"github.com/go-redis/redis/v7/internal/pool"
+	"github.com/go-redis/redis/v7/internal/proto"
+)
+
+var ErrClosed = pool.ErrClosed
+
+type Error interface {
+	error
+
+	// RedisError is a no-op function but
+	// serves to distinguish types that are Redis
+	// errors from ordinary errors: a type is a
+	// Redis error if it has a RedisError method.
+	RedisError()
+}
+
+var _ Error = proto.RedisError("")
+
+func isRetryableError(err error, retryTimeout bool) bool {
+	switch err {
+	case nil, context.Canceled, context.DeadlineExceeded:
+		return false
+	case io.EOF:
+		return true
+	}
+	if netErr, ok := err.(net.Error); ok {
+		if netErr.Timeout() {
+			return retryTimeout
+		}
+		return true
+	}
+
+	s := err.Error()
+	if s == "ERR max number of clients reached" {
+		return true
+	}
+	if strings.HasPrefix(s, "LOADING ") {
+		return true
+	}
+	if strings.HasPrefix(s, "READONLY ") {
+		return true
+	}
+	if strings.HasPrefix(s, "CLUSTERDOWN ") {
+		return true
+	}
+	return false
+}
+
+func isRedisError(err error) bool {
+	_, ok := err.(proto.RedisError)
+	return ok
+}
+
+func isBadConn(err error, allowTimeout bool) bool {
+	if err == nil {
+		return false
+	}
+	if isRedisError(err) {
+		// Close connections in read only state in case domain addr is used
+		// and domain resolves to a different Redis Server. See #790.
+		return isReadOnlyError(err)
+	}
+	if allowTimeout {
+		if netErr, ok := err.(net.Error); ok && netErr.Timeout() {
+			return false
+		}
+	}
+	return true
+}
+
+func isMovedError(err error) (moved bool, ask bool, addr string) {
+	if !isRedisError(err) {
+		return
+	}
+
+	s := err.Error()
+	switch {
+	case strings.HasPrefix(s, "MOVED "):
+		moved = true
+	case strings.HasPrefix(s, "ASK "):
+		ask = true
+	default:
+		return
+	}
+
+	ind := strings.LastIndex(s, " ")
+	if ind == -1 {
+		return false, false, ""
+	}
+	addr = s[ind+1:]
+	return
+}
+
+func isLoadingError(err error) bool {
+	return strings.HasPrefix(err.Error(), "LOADING ")
+}
+
+func isReadOnlyError(err error) bool {
+	return strings.HasPrefix(err.Error(), "READONLY ")
+}
diff --git a/vendor/github.com/go-redis/redis/v7/go.mod b/vendor/github.com/go-redis/redis/v7/go.mod
new file mode 100644
index 0000000000..e3a4dec54a
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/go.mod
@@ -0,0 +1,15 @@
+module github.com/go-redis/redis/v7
+
+require (
+	github.com/golang/protobuf v1.3.2 // indirect
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/onsi/ginkgo v1.10.1
+	github.com/onsi/gomega v1.7.0
+	golang.org/x/net v0.0.0-20190923162816-aa69164e4478 // indirect
+	golang.org/x/sys v0.0.0-20191010194322-b09406accb47 // indirect
+	golang.org/x/text v0.3.2 // indirect
+	gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 // indirect
+	gopkg.in/yaml.v2 v2.2.4 // indirect
+)
+
+go 1.11
diff --git a/vendor/github.com/go-redis/redis/v7/go.sum b/vendor/github.com/go-redis/redis/v7/go.sum
new file mode 100644
index 0000000000..6a04dbb63a
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/go.sum
@@ -0,0 +1,47 @@
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/golang/protobuf v1.2.0 h1:P3YflyNX/ehuJFLhxviNdFxQPkGK5cDcApsge1SqnvM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.2 h1:6nsPYzhq5kReh6QImI3k5qWzO4PEbvbIW2cwSfR/6xs=
+github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/hpcloud/tail v1.0.0 h1:nfCOvKYfkgYP8hkirhJocXT2+zOD8yUNjXaWfTlyFKI=
+github.com/hpcloud/tail v1.0.0/go.mod h1:ab1qPbhIpdTxEkNHXyeSf5vhxWSCs/tWer42PpOxQnU=
+github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
+github.com/onsi/ginkgo v1.6.0/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/ginkgo v1.10.1 h1:q/mM8GF/n0shIN8SaAZ0V+jnLPzen6WIVZdiwrRlMlo=
+github.com/onsi/ginkgo v1.10.1/go.mod h1:lLunBs/Ym6LB5Z9jYTR76FiuTmxDTDusOGeTQH+WWjE=
+github.com/onsi/gomega v1.7.0 h1:XPnZz8VVBHjVsy1vzJmRwIcSwiUO+JFfrv/xGiigmME=
+github.com/onsi/gomega v1.7.0/go.mod h1:ex+gbHU/CVuBBDIJjb2X0qEXbFg53c61hWP/1CpauHY=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
+golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478 h1:l5EDrHhldLYb3ZRHDUhXF7Om7MvYXnkV9/iQNo1lX6g=
+golang.org/x/net v0.0.0-20190923162816-aa69164e4478/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e h1:o3PsSEY8E4eXWkXrIP9YJALUkVZqzHJT5DOasTyn8Vs=
+golang.org/x/sys v0.0.0-20180909124046-d0be0721c37e/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20191010194322-b09406accb47 h1:/XfQ9z7ib8eEJX2hdgFTZJ/ntt0swNk5oYBziWeTCvY=
+golang.org/x/sys v0.0.0-20191010194322-b09406accb47/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0 h1:g61tztE5qeGQ89tm6NTjjM9VPIm088od1l6aSorWRWg=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/text v0.3.2 h1:tW2bmiBqwgJj/UpqtC8EpXEZVYOwU0yG4iWbprSVAcs=
+golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
+golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
+gopkg.in/fsnotify.v1 v1.4.7/go.mod h1:Tz8NjZHkW78fSQdbUxIjBTcgA1z1m8ZHf0WmKUhAMys=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 h1:uRGJdciOHaEIrze2W8Q3AKkepLTh2hOroT7a+7czfdQ=
+gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
+gopkg.in/yaml.v2 v2.2.1 h1:mUhvW9EsL+naU5Q3cakzfE91YhliOondGd6ZrsDBHQE=
+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v2 v2.2.4 h1:/eiJrUcujPVeJ3xlSWaiNi3uSVmDGBK1pDHUHAnao1I=
+gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
diff --git a/vendor/github.com/go-redis/redis/internal/consistenthash/consistenthash.go b/vendor/github.com/go-redis/redis/v7/internal/consistenthash/consistenthash.go
index a9c56f0762..a9c56f0762 100644
--- a/vendor/github.com/go-redis/redis/internal/consistenthash/consistenthash.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/consistenthash/consistenthash.go
diff --git a/vendor/github.com/go-redis/redis/internal/hashtag/hashtag.go b/vendor/github.com/go-redis/redis/v7/internal/hashtag/hashtag.go
index 22f5b3981b..22f5b3981b 100644
--- a/vendor/github.com/go-redis/redis/internal/hashtag/hashtag.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/hashtag/hashtag.go
diff --git a/vendor/github.com/go-redis/redis/internal/internal.go b/vendor/github.com/go-redis/redis/v7/internal/internal.go
index ad3fc3c9ff..ad3fc3c9ff 100644
--- a/vendor/github.com/go-redis/redis/internal/internal.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/internal.go
diff --git a/vendor/github.com/go-redis/redis/v7/internal/log.go b/vendor/github.com/go-redis/redis/v7/internal/log.go
new file mode 100644
index 0000000000..405a2728d6
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/internal/log.go
@@ -0,0 +1,8 @@
+package internal
+
+import (
+	"log"
+	"os"
+)
+
+var Logger = log.New(os.Stderr, "redis: ", log.LstdFlags|log.Lshortfile)
diff --git a/vendor/github.com/go-redis/redis/internal/once.go b/vendor/github.com/go-redis/redis/v7/internal/once.go
index 64f46272ae..64f46272ae 100644
--- a/vendor/github.com/go-redis/redis/internal/once.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/once.go
diff --git a/vendor/github.com/go-redis/redis/v7/internal/pool/conn.go b/vendor/github.com/go-redis/redis/v7/internal/pool/conn.go
new file mode 100644
index 0000000000..e9a2585463
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/internal/pool/conn.go
@@ -0,0 +1,118 @@
+package pool
+
+import (
+	"context"
+	"net"
+	"sync/atomic"
+	"time"
+
+	"github.com/go-redis/redis/v7/internal/proto"
+)
+
+var noDeadline = time.Time{}
+
+type Conn struct {
+	netConn net.Conn
+
+	rd *proto.Reader
+	wr *proto.Writer
+
+	Inited    bool
+	pooled    bool
+	createdAt time.Time
+	usedAt    int64 // atomic
+}
+
+func NewConn(netConn net.Conn) *Conn {
+	cn := &Conn{
+		netConn:   netConn,
+		createdAt: time.Now(),
+	}
+	cn.rd = proto.NewReader(netConn)
+	cn.wr = proto.NewWriter(netConn)
+	cn.SetUsedAt(time.Now())
+	return cn
+}
+
+func (cn *Conn) UsedAt() time.Time {
+	unix := atomic.LoadInt64(&cn.usedAt)
+	return time.Unix(unix, 0)
+}
+
+func (cn *Conn) SetUsedAt(tm time.Time) {
+	atomic.StoreInt64(&cn.usedAt, tm.Unix())
+}
+
+func (cn *Conn) SetNetConn(netConn net.Conn) {
+	cn.netConn = netConn
+	cn.rd.Reset(netConn)
+	cn.wr.Reset(netConn)
+}
+
+func (cn *Conn) Write(b []byte) (int, error) {
+	return cn.netConn.Write(b)
+}
+
+func (cn *Conn) RemoteAddr() net.Addr {
+	return cn.netConn.RemoteAddr()
+}
+
+func (cn *Conn) WithReader(ctx context.Context, timeout time.Duration, fn func(rd *proto.Reader) error) error {
+	err := cn.netConn.SetReadDeadline(cn.deadline(ctx, timeout))
+	if err != nil {
+		return err
+	}
+	return fn(cn.rd)
+}
+
+func (cn *Conn) WithWriter(
+	ctx context.Context, timeout time.Duration, fn func(wr *proto.Writer) error,
+) error {
+	err := cn.netConn.SetWriteDeadline(cn.deadline(ctx, timeout))
+	if err != nil {
+		return err
+	}
+
+	if cn.wr.Buffered() > 0 {
+		cn.wr.Reset(cn.netConn)
+	}
+
+	err = fn(cn.wr)
+	if err != nil {
+		return err
+	}
+
+	return cn.wr.Flush()
+}
+
+func (cn *Conn) Close() error {
+	return cn.netConn.Close()
+}
+
+func (cn *Conn) deadline(ctx context.Context, timeout time.Duration) time.Time {
+	tm := time.Now()
+	cn.SetUsedAt(tm)
+
+	if timeout > 0 {
+		tm = tm.Add(timeout)
+	}
+
+	if ctx != nil {
+		deadline, ok := ctx.Deadline()
+		if ok {
+			if timeout == 0 {
+				return deadline
+			}
+			if deadline.Before(tm) {
+				return deadline
+			}
+			return tm
+		}
+	}
+
+	if timeout > 0 {
+		return tm
+	}
+
+	return noDeadline
+}
diff --git a/vendor/github.com/go-redis/redis/internal/pool/pool.go b/vendor/github.com/go-redis/redis/v7/internal/pool/pool.go
index 9cecee8ad4..a8d8276a9f 100644
--- a/vendor/github.com/go-redis/redis/internal/pool/pool.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/pool/pool.go
@@ -1,13 +1,14 @@
 package pool
 
 import (
+	"context"
 	"errors"
 	"net"
 	"sync"
 	"sync/atomic"
 	"time"
 
-	"github.com/go-redis/redis/internal"
+	"github.com/go-redis/redis/v7/internal"
 )
 
 var ErrClosed = errors.New("redis: client is closed")
@@ -33,12 +34,12 @@ type Stats struct {
 }
 
 type Pooler interface {
-	NewConn() (*Conn, error)
+	NewConn(context.Context) (*Conn, error)
 	CloseConn(*Conn) error
 
-	Get() (*Conn, error)
+	Get(context.Context) (*Conn, error)
 	Put(*Conn)
-	Remove(*Conn)
+	Remove(*Conn, error)
 
 	Len() int
 	IdleLen() int
@@ -48,7 +49,7 @@ type Pooler interface {
 }
 
 type Options struct {
-	Dialer  func() (net.Conn, error)
+	Dialer  func(context.Context) (net.Conn, error)
 	OnClose func(*Conn) error
 
 	PoolSize           int
@@ -77,7 +78,8 @@ type ConnPool struct {
 
 	stats Stats
 
-	_closed uint32 // atomic
+	_closed  uint32 // atomic
+	closedCh chan struct{}
 }
 
 var _ Pooler = (*ConnPool)(nil)
@@ -89,11 +91,12 @@ func NewConnPool(opt *Options) *ConnPool {
 		queue:     make(chan struct{}, opt.PoolSize),
 		conns:     make([]*Conn, 0, opt.PoolSize),
 		idleConns: make([]*Conn, 0, opt.PoolSize),
+		closedCh:  make(chan struct{}),
 	}
 
-	for i := 0; i < opt.MinIdleConns; i++ {
-		p.checkMinIdleConns()
-	}
+	p.connsMu.Lock()
+	p.checkMinIdleConns()
+	p.connsMu.Unlock()
 
 	if opt.IdleTimeout > 0 && opt.IdleCheckFrequency > 0 {
 		go p.reaper(opt.IdleCheckFrequency)
@@ -106,31 +109,40 @@ func (p *ConnPool) checkMinIdleConns() {
 	if p.opt.MinIdleConns == 0 {
 		return
 	}
-	if p.poolSize < p.opt.PoolSize && p.idleConnsLen < p.opt.MinIdleConns {
+	for p.poolSize < p.opt.PoolSize && p.idleConnsLen < p.opt.MinIdleConns {
 		p.poolSize++
 		p.idleConnsLen++
-		go p.addIdleConn()
+		go func() {
+			err := p.addIdleConn()
+			if err != nil {
+				p.connsMu.Lock()
+				p.poolSize--
+				p.idleConnsLen--
+				p.connsMu.Unlock()
+			}
+		}()
 	}
 }
 
-func (p *ConnPool) addIdleConn() {
-	cn, err := p.newConn(true)
+func (p *ConnPool) addIdleConn() error {
+	cn, err := p.dialConn(context.TODO(), true)
 	if err != nil {
-		return
+		return err
 	}
 
 	p.connsMu.Lock()
 	p.conns = append(p.conns, cn)
 	p.idleConns = append(p.idleConns, cn)
 	p.connsMu.Unlock()
+	return nil
 }
 
-func (p *ConnPool) NewConn() (*Conn, error) {
-	return p._NewConn(false)
+func (p *ConnPool) NewConn(ctx context.Context) (*Conn, error) {
+	return p.newConn(ctx, false)
 }
 
-func (p *ConnPool) _NewConn(pooled bool) (*Conn, error) {
-	cn, err := p.newConn(pooled)
+func (p *ConnPool) newConn(ctx context.Context, pooled bool) (*Conn, error) {
+	cn, err := p.dialConn(ctx, pooled)
 	if err != nil {
 		return nil, err
 	}
@@ -138,17 +150,18 @@ func (p *ConnPool) _NewConn(pooled bool) (*Conn, error) {
 	p.connsMu.Lock()
 	p.conns = append(p.conns, cn)
 	if pooled {
-		if p.poolSize < p.opt.PoolSize {
-			p.poolSize++
-		} else {
+		// If pool is full remove the cn on next Put.
+		if p.poolSize >= p.opt.PoolSize {
 			cn.pooled = false
+		} else {
+			p.poolSize++
 		}
 	}
 	p.connsMu.Unlock()
 	return cn, nil
 }
 
-func (p *ConnPool) newConn(pooled bool) (*Conn, error) {
+func (p *ConnPool) dialConn(ctx context.Context, pooled bool) (*Conn, error) {
 	if p.closed() {
 		return nil, ErrClosed
 	}
@@ -157,7 +170,7 @@ func (p *ConnPool) newConn(pooled bool) (*Conn, error) {
 		return nil, p.getLastDialError()
 	}
 
-	netConn, err := p.opt.Dialer()
+	netConn, err := p.opt.Dialer(ctx)
 	if err != nil {
 		p.setLastDialError(err)
 		if atomic.AddUint32(&p.dialErrorsNum, 1) == uint32(p.opt.PoolSize) {
@@ -177,7 +190,7 @@ func (p *ConnPool) tryDial() {
 			return
 		}
 
-		conn, err := p.opt.Dialer()
+		conn, err := p.opt.Dialer(context.Background())
 		if err != nil {
 			p.setLastDialError(err)
 			time.Sleep(time.Second)
@@ -204,12 +217,12 @@ func (p *ConnPool) getLastDialError() error {
 }
 
 // Get returns existed connection from the pool or creates a new one.
-func (p *ConnPool) Get() (*Conn, error) {
+func (p *ConnPool) Get(ctx context.Context) (*Conn, error) {
 	if p.closed() {
 		return nil, ErrClosed
 	}
 
-	err := p.waitTurn()
+	err := p.waitTurn(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -234,7 +247,7 @@ func (p *ConnPool) Get() (*Conn, error) {
 
 	atomic.AddUint32(&p.stats.Misses, 1)
 
-	newcn, err := p._NewConn(true)
+	newcn, err := p.newConn(ctx, true)
 	if err != nil {
 		p.freeTurn()
 		return nil, err
@@ -247,26 +260,39 @@ func (p *ConnPool) getTurn() {
 	p.queue <- struct{}{}
 }
 
-func (p *ConnPool) waitTurn() error {
+func (p *ConnPool) waitTurn(ctx context.Context) error {
+	select {
+	case <-ctx.Done():
+		return ctx.Err()
+	default:
+	}
+
 	select {
 	case p.queue <- struct{}{}:
 		return nil
 	default:
-		timer := timers.Get().(*time.Timer)
-		timer.Reset(p.opt.PoolTimeout)
+	}
 
-		select {
-		case p.queue <- struct{}{}:
-			if !timer.Stop() {
-				<-timer.C
-			}
-			timers.Put(timer)
-			return nil
-		case <-timer.C:
-			timers.Put(timer)
-			atomic.AddUint32(&p.stats.Timeouts, 1)
-			return ErrPoolTimeout
+	timer := timers.Get().(*time.Timer)
+	timer.Reset(p.opt.PoolTimeout)
+
+	select {
+	case <-ctx.Done():
+		if !timer.Stop() {
+			<-timer.C
+		}
+		timers.Put(timer)
+		return ctx.Err()
+	case p.queue <- struct{}{}:
+		if !timer.Stop() {
+			<-timer.C
 		}
+		timers.Put(timer)
+		return nil
+	case <-timer.C:
+		timers.Put(timer)
+		atomic.AddUint32(&p.stats.Timeouts, 1)
+		return ErrPoolTimeout
 	}
 }
 
@@ -288,8 +314,14 @@ func (p *ConnPool) popIdle() *Conn {
 }
 
 func (p *ConnPool) Put(cn *Conn) {
+	if cn.rd.Buffered() > 0 {
+		internal.Logger.Printf("Conn has unread data")
+		p.Remove(cn, BadConnError{})
+		return
+	}
+
 	if !cn.pooled {
-		p.Remove(cn)
+		p.Remove(cn, nil)
 		return
 	}
 
@@ -300,19 +332,24 @@ func (p *ConnPool) Put(cn *Conn) {
 	p.freeTurn()
 }
 
-func (p *ConnPool) Remove(cn *Conn) {
-	p.removeConn(cn)
+func (p *ConnPool) Remove(cn *Conn, reason error) {
+	p.removeConnWithLock(cn)
 	p.freeTurn()
 	_ = p.closeConn(cn)
 }
 
 func (p *ConnPool) CloseConn(cn *Conn) error {
-	p.removeConn(cn)
+	p.removeConnWithLock(cn)
 	return p.closeConn(cn)
 }
 
-func (p *ConnPool) removeConn(cn *Conn) {
+func (p *ConnPool) removeConnWithLock(cn *Conn) {
 	p.connsMu.Lock()
+	p.removeConn(cn)
+	p.connsMu.Unlock()
+}
+
+func (p *ConnPool) removeConn(cn *Conn) {
 	for i, c := range p.conns {
 		if c == cn {
 			p.conns = append(p.conns[:i], p.conns[i+1:]...)
@@ -320,10 +357,9 @@ func (p *ConnPool) removeConn(cn *Conn) {
 				p.poolSize--
 				p.checkMinIdleConns()
 			}
-			break
+			return
 		}
 	}
-	p.connsMu.Unlock()
 }
 
 func (p *ConnPool) closeConn(cn *Conn) error {
@@ -384,6 +420,7 @@ func (p *ConnPool) Close() error {
 	if !atomic.CompareAndSwapUint32(&p._closed, 0, 1) {
 		return ErrClosed
 	}
+	close(p.closedCh)
 
 	var firstErr error
 	p.connsMu.Lock()
@@ -401,20 +438,28 @@ func (p *ConnPool) Close() error {
 	return firstErr
 }
 
-func (p *ConnPool) reapStaleConn() *Conn {
-	if len(p.idleConns) == 0 {
-		return nil
-	}
+func (p *ConnPool) reaper(frequency time.Duration) {
+	ticker := time.NewTicker(frequency)
+	defer ticker.Stop()
 
-	cn := p.idleConns[0]
-	if !p.isStaleConn(cn) {
-		return nil
+	for {
+		select {
+		case <-ticker.C:
+			// It is possible that ticker and closedCh arrive together,
+			// and select pseudo-randomly pick ticker case, we double
+			// check here to prevent being executed after closed.
+			if p.closed() {
+				return
+			}
+			_, err := p.ReapStaleConns()
+			if err != nil {
+				internal.Logger.Printf("ReapStaleConns failed: %s", err)
+				continue
+			}
+		case <-p.closedCh:
+			return
+		}
 	}
-
-	p.idleConns = append(p.idleConns[:0], p.idleConns[1:]...)
-	p.idleConnsLen--
-
-	return cn
 }
 
 func (p *ConnPool) ReapStaleConns() (int, error) {
@@ -425,38 +470,34 @@ func (p *ConnPool) ReapStaleConns() (int, error) {
 		p.connsMu.Lock()
 		cn := p.reapStaleConn()
 		p.connsMu.Unlock()
-
-		if cn != nil {
-			p.removeConn(cn)
-		}
-
 		p.freeTurn()
 
 		if cn != nil {
-			p.closeConn(cn)
+			_ = p.closeConn(cn)
 			n++
 		} else {
 			break
 		}
 	}
+	atomic.AddUint32(&p.stats.StaleConns, uint32(n))
 	return n, nil
 }
 
-func (p *ConnPool) reaper(frequency time.Duration) {
-	ticker := time.NewTicker(frequency)
-	defer ticker.Stop()
+func (p *ConnPool) reapStaleConn() *Conn {
+	if len(p.idleConns) == 0 {
+		return nil
+	}
 
-	for range ticker.C {
-		if p.closed() {
-			break
-		}
-		n, err := p.ReapStaleConns()
-		if err != nil {
-			internal.Logf("ReapStaleConns failed: %s", err)
-			continue
-		}
-		atomic.AddUint32(&p.stats.StaleConns, uint32(n))
+	cn := p.idleConns[0]
+	if !p.isStaleConn(cn) {
+		return nil
 	}
+
+	p.idleConns = append(p.idleConns[:0], p.idleConns[1:]...)
+	p.idleConnsLen--
+	p.removeConn(cn)
+
+	return cn
 }
 
 func (p *ConnPool) isStaleConn(cn *Conn) bool {
@@ -468,7 +509,7 @@ func (p *ConnPool) isStaleConn(cn *Conn) bool {
 	if p.opt.IdleTimeout > 0 && now.Sub(cn.UsedAt()) >= p.opt.IdleTimeout {
 		return true
 	}
-	if p.opt.MaxConnAge > 0 && now.Sub(cn.InitedAt) >= p.opt.MaxConnAge {
+	if p.opt.MaxConnAge > 0 && now.Sub(cn.createdAt) >= p.opt.MaxConnAge {
 		return true
 	}
 
diff --git a/vendor/github.com/go-redis/redis/v7/internal/pool/pool_single.go b/vendor/github.com/go-redis/redis/v7/internal/pool/pool_single.go
new file mode 100644
index 0000000000..04758a00d4
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/internal/pool/pool_single.go
@@ -0,0 +1,208 @@
+package pool
+
+import (
+	"context"
+	"fmt"
+	"sync/atomic"
+)
+
+const (
+	stateDefault = 0
+	stateInited  = 1
+	stateClosed  = 2
+)
+
+type BadConnError struct {
+	wrapped error
+}
+
+var _ error = (*BadConnError)(nil)
+
+func (e BadConnError) Error() string {
+	s := "redis: Conn is in a bad state"
+	if e.wrapped != nil {
+		s += ": " + e.wrapped.Error()
+	}
+	return s
+}
+
+func (e BadConnError) Unwrap() error {
+	return e.wrapped
+}
+
+type SingleConnPool struct {
+	pool  Pooler
+	level int32 // atomic
+
+	state uint32 // atomic
+	ch    chan *Conn
+
+	_badConnError atomic.Value
+}
+
+var _ Pooler = (*SingleConnPool)(nil)
+
+func NewSingleConnPool(pool Pooler) *SingleConnPool {
+	p, ok := pool.(*SingleConnPool)
+	if !ok {
+		p = &SingleConnPool{
+			pool: pool,
+			ch:   make(chan *Conn, 1),
+		}
+	}
+	atomic.AddInt32(&p.level, 1)
+	return p
+}
+
+func (p *SingleConnPool) SetConn(cn *Conn) {
+	if atomic.CompareAndSwapUint32(&p.state, stateDefault, stateInited) {
+		p.ch <- cn
+	} else {
+		panic("not reached")
+	}
+}
+
+func (p *SingleConnPool) NewConn(ctx context.Context) (*Conn, error) {
+	return p.pool.NewConn(ctx)
+}
+
+func (p *SingleConnPool) CloseConn(cn *Conn) error {
+	return p.pool.CloseConn(cn)
+}
+
+func (p *SingleConnPool) Get(ctx context.Context) (*Conn, error) {
+	// In worst case this races with Close which is not a very common operation.
+	for i := 0; i < 1000; i++ {
+		switch atomic.LoadUint32(&p.state) {
+		case stateDefault:
+			cn, err := p.pool.Get(ctx)
+			if err != nil {
+				return nil, err
+			}
+			if atomic.CompareAndSwapUint32(&p.state, stateDefault, stateInited) {
+				return cn, nil
+			}
+			p.pool.Remove(cn, ErrClosed)
+		case stateInited:
+			if err := p.badConnError(); err != nil {
+				return nil, err
+			}
+			cn, ok := <-p.ch
+			if !ok {
+				return nil, ErrClosed
+			}
+			return cn, nil
+		case stateClosed:
+			return nil, ErrClosed
+		default:
+			panic("not reached")
+		}
+	}
+	return nil, fmt.Errorf("redis: SingleConnPool.Get: infinite loop")
+}
+
+func (p *SingleConnPool) Put(cn *Conn) {
+	defer func() {
+		if recover() != nil {
+			p.freeConn(cn)
+		}
+	}()
+	p.ch <- cn
+}
+
+func (p *SingleConnPool) freeConn(cn *Conn) {
+	if err := p.badConnError(); err != nil {
+		p.pool.Remove(cn, err)
+	} else {
+		p.pool.Put(cn)
+	}
+}
+
+func (p *SingleConnPool) Remove(cn *Conn, reason error) {
+	defer func() {
+		if recover() != nil {
+			p.pool.Remove(cn, ErrClosed)
+		}
+	}()
+	p._badConnError.Store(BadConnError{wrapped: reason})
+	p.ch <- cn
+}
+
+func (p *SingleConnPool) Len() int {
+	switch atomic.LoadUint32(&p.state) {
+	case stateDefault:
+		return 0
+	case stateInited:
+		return 1
+	case stateClosed:
+		return 0
+	default:
+		panic("not reached")
+	}
+}
+
+func (p *SingleConnPool) IdleLen() int {
+	return len(p.ch)
+}
+
+func (p *SingleConnPool) Stats() *Stats {
+	return &Stats{}
+}
+
+func (p *SingleConnPool) Close() error {
+	level := atomic.AddInt32(&p.level, -1)
+	if level > 0 {
+		return nil
+	}
+
+	for i := 0; i < 1000; i++ {
+		state := atomic.LoadUint32(&p.state)
+		if state == stateClosed {
+			return ErrClosed
+		}
+		if atomic.CompareAndSwapUint32(&p.state, state, stateClosed) {
+			close(p.ch)
+			cn, ok := <-p.ch
+			if ok {
+				p.freeConn(cn)
+			}
+			return nil
+		}
+	}
+
+	return fmt.Errorf("redis: SingleConnPool.Close: infinite loop")
+}
+
+func (p *SingleConnPool) Reset() error {
+	if p.badConnError() == nil {
+		return nil
+	}
+
+	select {
+	case cn, ok := <-p.ch:
+		if !ok {
+			return ErrClosed
+		}
+		p.pool.Remove(cn, ErrClosed)
+		p._badConnError.Store(BadConnError{wrapped: nil})
+	default:
+		return fmt.Errorf("redis: SingleConnPool does not have a Conn")
+	}
+
+	if !atomic.CompareAndSwapUint32(&p.state, stateInited, stateDefault) {
+		state := atomic.LoadUint32(&p.state)
+		return fmt.Errorf("redis: invalid SingleConnPool state: %d", state)
+	}
+
+	return nil
+}
+
+func (p *SingleConnPool) badConnError() error {
+	if v := p._badConnError.Load(); v != nil {
+		err := v.(BadConnError)
+		if err.wrapped != nil {
+			return err
+		}
+	}
+	return nil
+}
diff --git a/vendor/github.com/go-redis/redis/internal/pool/pool_sticky.go b/vendor/github.com/go-redis/redis/v7/internal/pool/pool_sticky.go
index 91bd913330..d4a355a44f 100644
--- a/vendor/github.com/go-redis/redis/internal/pool/pool_sticky.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/pool/pool_sticky.go
@@ -1,6 +1,9 @@
 package pool
 
-import "sync"
+import (
+	"context"
+	"sync"
+)
 
 type StickyConnPool struct {
 	pool     *ConnPool
@@ -20,7 +23,7 @@ func NewStickyConnPool(pool *ConnPool, reusable bool) *StickyConnPool {
 	}
 }
 
-func (p *StickyConnPool) NewConn() (*Conn, error) {
+func (p *StickyConnPool) NewConn(context.Context) (*Conn, error) {
 	panic("not implemented")
 }
 
@@ -28,7 +31,7 @@ func (p *StickyConnPool) CloseConn(*Conn) error {
 	panic("not implemented")
 }
 
-func (p *StickyConnPool) Get() (*Conn, error) {
+func (p *StickyConnPool) Get(ctx context.Context) (*Conn, error) {
 	p.mu.Lock()
 	defer p.mu.Unlock()
 
@@ -39,7 +42,7 @@ func (p *StickyConnPool) Get() (*Conn, error) {
 		return p.cn, nil
 	}
 
-	cn, err := p.pool.Get()
+	cn, err := p.pool.Get(ctx)
 	if err != nil {
 		return nil, err
 	}
@@ -55,13 +58,13 @@ func (p *StickyConnPool) putUpstream() {
 
 func (p *StickyConnPool) Put(cn *Conn) {}
 
-func (p *StickyConnPool) removeUpstream() {
-	p.pool.Remove(p.cn)
+func (p *StickyConnPool) removeUpstream(reason error) {
+	p.pool.Remove(p.cn, reason)
 	p.cn = nil
 }
 
-func (p *StickyConnPool) Remove(cn *Conn) {
-	p.removeUpstream()
+func (p *StickyConnPool) Remove(cn *Conn, reason error) {
+	p.removeUpstream(reason)
 }
 
 func (p *StickyConnPool) Len() int {
@@ -101,7 +104,7 @@ func (p *StickyConnPool) Close() error {
 		if p.reusable {
 			p.putUpstream()
 		} else {
-			p.removeUpstream()
+			p.removeUpstream(ErrClosed)
 		}
 	}
 
diff --git a/vendor/github.com/go-redis/redis/internal/proto/reader.go b/vendor/github.com/go-redis/redis/v7/internal/proto/reader.go
index 896b6f654c..d3f646e98f 100644
--- a/vendor/github.com/go-redis/redis/internal/proto/reader.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/proto/reader.go
@@ -4,9 +4,8 @@ import (
 	"bufio"
 	"fmt"
 	"io"
-	"strconv"
 
-	"github.com/go-redis/redis/internal/util"
+	"github.com/go-redis/redis/v7/internal/util"
 )
 
 const (
@@ -25,6 +24,8 @@ type RedisError string
 
 func (e RedisError) Error() string { return string(e) }
 
+func (RedisError) RedisError() {}
+
 //------------------------------------------------------------------------------
 
 type MultiBulkParse func(*Reader, int64) (interface{}, error)
@@ -41,27 +42,44 @@ func NewReader(rd io.Reader) *Reader {
 	}
 }
 
+func (r *Reader) Buffered() int {
+	return r.rd.Buffered()
+}
+
+func (r *Reader) Peek(n int) ([]byte, error) {
+	return r.rd.Peek(n)
+}
+
 func (r *Reader) Reset(rd io.Reader) {
 	r.rd.Reset(rd)
 }
 
 func (r *Reader) ReadLine() ([]byte, error) {
-	line, isPrefix, err := r.rd.ReadLine()
+	line, err := r.readLine()
 	if err != nil {
 		return nil, err
 	}
-	if isPrefix {
-		return nil, bufio.ErrBufferFull
-	}
-	if len(line) == 0 {
-		return nil, fmt.Errorf("redis: reply is empty")
-	}
 	if isNilReply(line) {
 		return nil, Nil
 	}
 	return line, nil
 }
 
+// readLine that returns an error if:
+//   - there is a pending read error;
+//   - or line does not end with \r\n.
+func (r *Reader) readLine() ([]byte, error) {
+	b, err := r.rd.ReadSlice('\n')
+	if err != nil {
+		return nil, err
+	}
+	if len(b) <= 2 || b[len(b)-1] != '\n' || b[len(b)-2] != '\r' {
+		return nil, fmt.Errorf("redis: invalid reply: %q", b)
+	}
+	b = b[:len(b)-2]
+	return b, nil
+}
+
 func (r *Reader) ReadReply(m MultiBulkParse) (interface{}, error) {
 	line, err := r.ReadLine()
 	if err != nil {
@@ -82,6 +100,10 @@ func (r *Reader) ReadReply(m MultiBulkParse) (interface{}, error) {
 		if err != nil {
 			return nil, err
 		}
+		if m == nil {
+			err := fmt.Errorf("redis: got %.100q, but multi bulk parser is nil", line)
+			return nil, err
+		}
 		return m(r, n)
 	}
 	return nil, fmt.Errorf("redis: can't parse %.100q", line)
@@ -126,7 +148,7 @@ func (r *Reader) readStringReply(line []byte) (string, error) {
 		return "", Nil
 	}
 
-	replyLen, err := strconv.Atoi(string(line[1:]))
+	replyLen, err := util.Atoi(line[1:])
 	if err != nil {
 		return "", err
 	}
@@ -251,7 +273,7 @@ func (r *Reader) _readTmpBytesReply(line []byte) ([]byte, error) {
 		return nil, Nil
 	}
 
-	replyLen, err := strconv.Atoi(string(line[1:]))
+	replyLen, err := util.Atoi(line[1:])
 	if err != nil {
 		return nil, err
 	}
@@ -266,10 +288,12 @@ func (r *Reader) _readTmpBytesReply(line []byte) ([]byte, error) {
 }
 
 func (r *Reader) buf(n int) []byte {
-	if d := n - cap(r._buf); d > 0 {
-		r._buf = append(r._buf, make([]byte, d)...)
+	if n <= cap(r._buf) {
+		return r._buf[:n]
 	}
-	return r._buf[:n]
+	d := n - cap(r._buf)
+	r._buf = append(r._buf, make([]byte, d)...)
+	return r._buf
 }
 
 func isNilReply(b []byte) bool {
diff --git a/vendor/github.com/go-redis/redis/internal/proto/scan.go b/vendor/github.com/go-redis/redis/v7/internal/proto/scan.go
index 3bdb33f9db..90c1e4ae6e 100644
--- a/vendor/github.com/go-redis/redis/internal/proto/scan.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/proto/scan.go
@@ -5,7 +5,7 @@ import (
 	"fmt"
 	"reflect"
 
-	"github.com/go-redis/redis/internal/util"
+	"github.com/go-redis/redis/v7/internal/util"
 )
 
 func Scan(b []byte, v interface{}) error {
diff --git a/vendor/github.com/go-redis/redis/internal/proto/writer.go b/vendor/github.com/go-redis/redis/v7/internal/proto/writer.go
index d106ce0ee6..d552f1e84d 100644
--- a/vendor/github.com/go-redis/redis/internal/proto/writer.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/proto/writer.go
@@ -6,8 +6,9 @@ import (
 	"fmt"
 	"io"
 	"strconv"
+	"time"
 
-	"github.com/go-redis/redis/internal/util"
+	"github.com/go-redis/redis/v7/internal/util"
 )
 
 type Writer struct {
@@ -89,9 +90,10 @@ func (w *Writer) writeArg(v interface{}) error {
 	case bool:
 		if v {
 			return w.int(1)
-		} else {
-			return w.int(0)
 		}
+		return w.int(0)
+	case time.Time:
+		return w.string(v.Format(time.RFC3339Nano))
 	case encoding.BinaryMarshaler:
 		b, err := v.MarshalBinary()
 		if err != nil {
@@ -150,6 +152,10 @@ func (w *Writer) crlf() error {
 	return w.wr.WriteByte('\n')
 }
 
+func (w *Writer) Buffered() int {
+	return w.wr.Buffered()
+}
+
 func (w *Writer) Reset(wr io.Writer) {
 	w.wr.Reset(wr)
 }
diff --git a/vendor/github.com/go-redis/redis/v7/internal/util.go b/vendor/github.com/go-redis/redis/v7/internal/util.go
new file mode 100644
index 0000000000..844f34bad8
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/internal/util.go
@@ -0,0 +1,56 @@
+package internal
+
+import (
+	"context"
+	"time"
+
+	"github.com/go-redis/redis/v7/internal/util"
+)
+
+func Sleep(ctx context.Context, dur time.Duration) error {
+	t := time.NewTimer(dur)
+	defer t.Stop()
+
+	select {
+	case <-t.C:
+		return nil
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+}
+
+func ToLower(s string) string {
+	if isLower(s) {
+		return s
+	}
+
+	b := make([]byte, len(s))
+	for i := range b {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			c += 'a' - 'A'
+		}
+		b[i] = c
+	}
+	return util.BytesToString(b)
+}
+
+func isLower(s string) bool {
+	for i := 0; i < len(s); i++ {
+		c := s[i]
+		if c >= 'A' && c <= 'Z' {
+			return false
+		}
+	}
+	return true
+}
+
+func Unwrap(err error) error {
+	u, ok := err.(interface {
+		Unwrap() error
+	})
+	if !ok {
+		return nil
+	}
+	return u.Unwrap()
+}
diff --git a/vendor/github.com/go-redis/redis/internal/util/safe.go b/vendor/github.com/go-redis/redis/v7/internal/util/safe.go
index 1b3060ebc2..1b3060ebc2 100644
--- a/vendor/github.com/go-redis/redis/internal/util/safe.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/util/safe.go
diff --git a/vendor/github.com/go-redis/redis/internal/util/strconv.go b/vendor/github.com/go-redis/redis/v7/internal/util/strconv.go
index db5033802a..db5033802a 100644
--- a/vendor/github.com/go-redis/redis/internal/util/strconv.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/util/strconv.go
diff --git a/vendor/github.com/go-redis/redis/internal/util/unsafe.go b/vendor/github.com/go-redis/redis/v7/internal/util/unsafe.go
index c9868aac2b..c9868aac2b 100644
--- a/vendor/github.com/go-redis/redis/internal/util/unsafe.go
+++ b/vendor/github.com/go-redis/redis/v7/internal/util/unsafe.go
diff --git a/vendor/github.com/go-redis/redis/iterator.go b/vendor/github.com/go-redis/redis/v7/iterator.go
index 5d4bedfe5d..f9d3aab6d2 100644
--- a/vendor/github.com/go-redis/redis/iterator.go
+++ b/vendor/github.com/go-redis/redis/v7/iterator.go
@@ -1,6 +1,8 @@
 package redis
 
-import "sync"
+import (
+	"sync"
+)
 
 // ScanIterator is used to incrementally iterate over a collection of elements.
 // It's safe for concurrent use by multiple goroutines.
@@ -41,10 +43,10 @@ func (it *ScanIterator) Next() bool {
 		}
 
 		// Fetch next page.
-		if it.cmd._args[0] == "scan" {
-			it.cmd._args[1] = it.cmd.cursor
+		if it.cmd.args[0] == "scan" {
+			it.cmd.args[1] = it.cmd.cursor
 		} else {
-			it.cmd._args[2] = it.cmd.cursor
+			it.cmd.args[2] = it.cmd.cursor
 		}
 
 		err := it.cmd.process(it.cmd)
diff --git a/vendor/github.com/go-redis/redis/options.go b/vendor/github.com/go-redis/redis/v7/options.go
index b6fabf3f24..47dcc29bf3 100644
--- a/vendor/github.com/go-redis/redis/options.go
+++ b/vendor/github.com/go-redis/redis/v7/options.go
@@ -1,6 +1,7 @@
 package redis
 
 import (
+	"context"
 	"crypto/tls"
 	"errors"
 	"fmt"
@@ -11,17 +12,17 @@ import (
 	"strings"
 	"time"
 
-	"github.com/go-redis/redis/internal/pool"
+	"github.com/go-redis/redis/v7/internal/pool"
 )
 
 // Limiter is the interface of a rate limiter or a circuit breaker.
 type Limiter interface {
-	// Allow returns a nil if operation is allowed or an error otherwise.
-	// If operation is allowed client must report the result of operation
-	// whether is a success or a failure.
+	// Allow returns nil if operation is allowed or an error otherwise.
+	// If operation is allowed client must ReportResult of the operation
+	// whether it is a success or a failure.
 	Allow() error
-	// ReportResult reports the result of previously allowed operation.
-	// nil indicates a success, non-nil error indicates a failure.
+	// ReportResult reports the result of the previously allowed operation.
+	// nil indicates a success, non-nil error usually indicates a failure.
 	ReportResult(result error)
 }
 
@@ -34,13 +35,18 @@ type Options struct {
 
 	// Dialer creates new network connection and has priority over
 	// Network and Addr options.
-	Dialer func() (net.Conn, error)
+	Dialer func(ctx context.Context, network, addr string) (net.Conn, error)
 
 	// Hook that is called when new connection is established.
 	OnConnect func(*Conn) error
 
+	// Use the specified Username to authenticate the current connection with one of the connections defined in the ACL
+	// list when connecting to a Redis 6.0 instance, or greater, that is using the Redis ACL system.
+	Username string
+
 	// Optional password. Must match the password specified in the
-	// requirepass server configuration option.
+	// requirepass server configuration option (if connecting to a Redis 5.0 instance, or lower),
+	// or the User Password when connecting to a Redis 6.0 instance, or greater, that is using the Redis ACL system.
 	Password string
 	// Database to be selected after connecting to the server.
 	DB int
@@ -95,26 +101,32 @@ type Options struct {
 
 	// TLS Config to use. When set TLS will be negotiated.
 	TLSConfig *tls.Config
+
+	// Limiter interface used to implemented circuit breaker or rate limiter.
+	Limiter Limiter
 }
 
 func (opt *Options) init() {
-	if opt.Network == "" {
-		opt.Network = "tcp"
-	}
 	if opt.Addr == "" {
 		opt.Addr = "localhost:6379"
 	}
+	if opt.Network == "" {
+		if strings.HasPrefix(opt.Addr, "/") {
+			opt.Network = "unix"
+		} else {
+			opt.Network = "tcp"
+		}
+	}
 	if opt.Dialer == nil {
-		opt.Dialer = func() (net.Conn, error) {
+		opt.Dialer = func(ctx context.Context, network, addr string) (net.Conn, error) {
 			netDialer := &net.Dialer{
 				Timeout:   opt.DialTimeout,
 				KeepAlive: 5 * time.Minute,
 			}
 			if opt.TLSConfig == nil {
-				return netDialer.Dial(opt.Network, opt.Addr)
-			} else {
-				return tls.DialWithDialer(netDialer, opt.Network, opt.Addr, opt.TLSConfig)
+				return netDialer.DialContext(ctx, network, addr)
 			}
+			return tls.DialWithDialer(netDialer, network, addr, opt.TLSConfig)
 		}
 	}
 	if opt.PoolSize == 0 {
@@ -145,6 +157,9 @@ func (opt *Options) init() {
 		opt.IdleCheckFrequency = time.Minute
 	}
 
+	if opt.MaxRetries == -1 {
+		opt.MaxRetries = 0
+	}
 	switch opt.MinRetryBackoff {
 	case -1:
 		opt.MinRetryBackoff = 0
@@ -159,6 +174,11 @@ func (opt *Options) init() {
 	}
 }
 
+func (opt *Options) clone() *Options {
+	clone := *opt
+	return &clone
+}
+
 // ParseURL parses an URL into Options that can be used to connect to Redis.
 func ParseURL(redisURL string) (*Options, error) {
 	o := &Options{Network: "tcp"}
@@ -172,6 +192,7 @@ func ParseURL(redisURL string) (*Options, error) {
 	}
 
 	if u.User != nil {
+		o.Username = u.User.Username()
 		if p, ok := u.User.Password(); ok {
 			o.Password = p
 		}
@@ -215,7 +236,9 @@ func ParseURL(redisURL string) (*Options, error) {
 
 func newConnPool(opt *Options) *pool.ConnPool {
 	return pool.NewConnPool(&pool.Options{
-		Dialer:             opt.Dialer,
+		Dialer: func(ctx context.Context) (net.Conn, error) {
+			return opt.Dialer(ctx, opt.Network, opt.Addr)
+		},
 		PoolSize:           opt.PoolSize,
 		MinIdleConns:       opt.MinIdleConns,
 		MaxConnAge:         opt.MaxConnAge,
diff --git a/vendor/github.com/go-redis/redis/pipeline.go b/vendor/github.com/go-redis/redis/v7/pipeline.go
index b3a8844af0..d48566a787 100644
--- a/vendor/github.com/go-redis/redis/pipeline.go
+++ b/vendor/github.com/go-redis/redis/v7/pipeline.go
@@ -1,13 +1,27 @@
 package redis
 
 import (
+	"context"
 	"sync"
 
-	"github.com/go-redis/redis/internal/pool"
+	"github.com/go-redis/redis/v7/internal/pool"
 )
 
-type pipelineExecer func([]Cmder) error
+type pipelineExecer func(context.Context, []Cmder) error
 
+// Pipeliner is an mechanism to realise Redis Pipeline technique.
+//
+// Pipelining is a technique to extremely speed up processing by packing
+// operations to batches, send them at once to Redis and read a replies in a
+// singe step.
+// See https://redis.io/topics/pipelining
+//
+// Pay attention, that Pipeline is not a transaction, so you can get unexpected
+// results in case of big pipelines and small read/write timeouts.
+// Redis client has retransmission logic in case of timeouts, pipeline
+// can be retransmitted and commands can be executed more then once.
+// To avoid this: it is good idea to use reasonable bigger read/write timeouts
+// depends of your batch size and/or use TxPipeline.
 type Pipeliner interface {
 	StatefulCmdable
 	Do(args ...interface{}) *Cmd
@@ -15,6 +29,7 @@ type Pipeliner interface {
 	Close() error
 	Discard() error
 	Exec() ([]Cmder, error)
+	ExecContext(ctx context.Context) ([]Cmder, error)
 }
 
 var _ Pipeliner = (*Pipeline)(nil)
@@ -23,8 +38,10 @@ var _ Pipeliner = (*Pipeline)(nil)
 // http://redis.io/topics/pipelining. It's safe for concurrent use
 // by multiple goroutines.
 type Pipeline struct {
+	cmdable
 	statefulCmdable
 
+	ctx  context.Context
 	exec pipelineExecer
 
 	mu     sync.Mutex
@@ -32,6 +49,11 @@ type Pipeline struct {
 	closed bool
 }
 
+func (c *Pipeline) init() {
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+}
+
 func (c *Pipeline) Do(args ...interface{}) *Cmd {
 	cmd := NewCmd(args...)
 	_ = c.Process(cmd)
@@ -49,7 +71,7 @@ func (c *Pipeline) Process(cmd Cmder) error {
 // Close closes the pipeline, releasing any open resources.
 func (c *Pipeline) Close() error {
 	c.mu.Lock()
-	c.discard()
+	_ = c.discard()
 	c.closed = true
 	c.mu.Unlock()
 	return nil
@@ -77,6 +99,10 @@ func (c *Pipeline) discard() error {
 // Exec always returns list of commands and error of the first failed
 // command if any.
 func (c *Pipeline) Exec() ([]Cmder, error) {
+	return c.ExecContext(c.ctx)
+}
+
+func (c *Pipeline) ExecContext(ctx context.Context) ([]Cmder, error) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
@@ -91,10 +117,10 @@ func (c *Pipeline) Exec() ([]Cmder, error) {
 	cmds := c.cmds
 	c.cmds = nil
 
-	return cmds, c.exec(cmds)
+	return cmds, c.exec(ctx, cmds)
 }
 
-func (c *Pipeline) pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+func (c *Pipeline) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	if err := fn(c); err != nil {
 		return nil, err
 	}
@@ -103,16 +129,12 @@ func (c *Pipeline) pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
 	return cmds, err
 }
 
-func (c *Pipeline) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.pipelined(fn)
-}
-
 func (c *Pipeline) Pipeline() Pipeliner {
 	return c
 }
 
 func (c *Pipeline) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.pipelined(fn)
+	return c.Pipelined(fn)
 }
 
 func (c *Pipeline) TxPipeline() Pipeliner {
diff --git a/vendor/github.com/go-redis/redis/pubsub.go b/vendor/github.com/go-redis/redis/v7/pubsub.go
index 0afb47cda3..26cde242be 100644
--- a/vendor/github.com/go-redis/redis/pubsub.go
+++ b/vendor/github.com/go-redis/redis/v7/pubsub.go
@@ -1,19 +1,23 @@
 package redis
 
 import (
+	"context"
 	"errors"
 	"fmt"
+	"strings"
 	"sync"
 	"time"
 
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/pool"
-	"github.com/go-redis/redis/internal/proto"
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/pool"
+	"github.com/go-redis/redis/v7/internal/proto"
 )
 
+const pingTimeout = 30 * time.Second
+
 var errPingTimeout = errors.New("redis: ping timeout")
 
-// PubSub implements Pub/Sub commands bas described in
+// PubSub implements Pub/Sub commands as described in
 // http://redis.io/topics/pubsub. Message receiving is NOT safe
 // for concurrent use by multiple goroutines.
 //
@@ -29,28 +33,36 @@ type PubSub struct {
 	cn       *pool.Conn
 	channels map[string]struct{}
 	patterns map[string]struct{}
-	closed   bool
-	exit     chan struct{}
+
+	closed bool
+	exit   chan struct{}
 
 	cmd *Cmd
 
 	chOnce sync.Once
-	ch     chan *Message
+	msgCh  chan *Message
+	allCh  chan interface{}
 	ping   chan struct{}
 }
 
+func (c *PubSub) String() string {
+	channels := mapKeys(c.channels)
+	channels = append(channels, mapKeys(c.patterns)...)
+	return fmt.Sprintf("PubSub(%s)", strings.Join(channels, ", "))
+}
+
 func (c *PubSub) init() {
 	c.exit = make(chan struct{})
 }
 
-func (c *PubSub) conn() (*pool.Conn, error) {
+func (c *PubSub) connWithLock() (*pool.Conn, error) {
 	c.mu.Lock()
-	cn, err := c._conn(nil)
+	cn, err := c.conn(nil)
 	c.mu.Unlock()
 	return cn, err
 }
 
-func (c *PubSub) _conn(newChannels []string) (*pool.Conn, error) {
+func (c *PubSub) conn(newChannels []string) (*pool.Conn, error) {
 	if c.closed {
 		return nil, pool.ErrClosed
 	}
@@ -75,8 +87,8 @@ func (c *PubSub) _conn(newChannels []string) (*pool.Conn, error) {
 	return cn, nil
 }
 
-func (c *PubSub) writeCmd(cn *pool.Conn, cmd Cmder) error {
-	return cn.WithWriter(c.opt.WriteTimeout, func(wr *proto.Writer) error {
+func (c *PubSub) writeCmd(ctx context.Context, cn *pool.Conn, cmd Cmder) error {
+	return cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
 		return writeCmd(wr, cmd)
 	})
 }
@@ -85,10 +97,7 @@ func (c *PubSub) resubscribe(cn *pool.Conn) error {
 	var firstErr error
 
 	if len(c.channels) > 0 {
-		err := c._subscribe(cn, "subscribe", mapKeys(c.channels))
-		if err != nil && firstErr == nil {
-			firstErr = err
-		}
+		firstErr = c._subscribe(cn, "subscribe", mapKeys(c.channels))
 	}
 
 	if len(c.patterns) > 0 {
@@ -120,35 +129,35 @@ func (c *PubSub) _subscribe(
 		args = append(args, channel)
 	}
 	cmd := NewSliceCmd(args...)
-	return c.writeCmd(cn, cmd)
+	return c.writeCmd(context.TODO(), cn, cmd)
 }
 
-func (c *PubSub) releaseConn(cn *pool.Conn, err error, allowTimeout bool) {
+func (c *PubSub) releaseConnWithLock(cn *pool.Conn, err error, allowTimeout bool) {
 	c.mu.Lock()
-	c._releaseConn(cn, err, allowTimeout)
+	c.releaseConn(cn, err, allowTimeout)
 	c.mu.Unlock()
 }
 
-func (c *PubSub) _releaseConn(cn *pool.Conn, err error, allowTimeout bool) {
+func (c *PubSub) releaseConn(cn *pool.Conn, err error, allowTimeout bool) {
 	if c.cn != cn {
 		return
 	}
-	if internal.IsBadConn(err, allowTimeout) {
-		c._reconnect(err)
+	if isBadConn(err, allowTimeout) {
+		c.reconnect(err)
 	}
 }
 
-func (c *PubSub) _reconnect(reason error) {
-	_ = c._closeTheCn(reason)
-	_, _ = c._conn(nil)
+func (c *PubSub) reconnect(reason error) {
+	_ = c.closeTheCn(reason)
+	_, _ = c.conn(nil)
 }
 
-func (c *PubSub) _closeTheCn(reason error) error {
+func (c *PubSub) closeTheCn(reason error) error {
 	if c.cn == nil {
 		return nil
 	}
 	if !c.closed {
-		internal.Logf("redis: discarding bad PubSub connection: %s", reason)
+		internal.Logger.Printf("redis: discarding bad PubSub connection: %s", reason)
 	}
 	err := c.closeConn(c.cn)
 	c.cn = nil
@@ -165,8 +174,7 @@ func (c *PubSub) Close() error {
 	c.closed = true
 	close(c.exit)
 
-	err := c._closeTheCn(pool.ErrClosed)
-	return err
+	return c.closeTheCn(pool.ErrClosed)
 }
 
 // Subscribe the client to the specified channels. It returns
@@ -228,13 +236,13 @@ func (c *PubSub) PUnsubscribe(patterns ...string) error {
 }
 
 func (c *PubSub) subscribe(redisCmd string, channels ...string) error {
-	cn, err := c._conn(channels)
+	cn, err := c.conn(channels)
 	if err != nil {
 		return err
 	}
 
 	err = c._subscribe(cn, redisCmd, channels)
-	c._releaseConn(cn, err, false)
+	c.releaseConn(cn, err, false)
 	return err
 }
 
@@ -245,13 +253,13 @@ func (c *PubSub) Ping(payload ...string) error {
 	}
 	cmd := NewCmd(args...)
 
-	cn, err := c.conn()
+	cn, err := c.connWithLock()
 	if err != nil {
 		return err
 	}
 
-	err = c.writeCmd(cn, cmd)
-	c.releaseConn(cn, err, false)
+	err = c.writeCmd(context.TODO(), cn, cmd)
+	c.releaseConnWithLock(cn, err, false)
 	return err
 }
 
@@ -301,9 +309,11 @@ func (c *PubSub) newMessage(reply interface{}) (interface{}, error) {
 	case []interface{}:
 		switch kind := reply[0].(string); kind {
 		case "subscribe", "unsubscribe", "psubscribe", "punsubscribe":
+			// Can be nil in case of "unsubscribe".
+			channel, _ := reply[1].(string)
 			return &Subscription{
 				Kind:    kind,
-				Channel: reply[1].(string),
+				Channel: channel,
 				Count:   int(reply[2].(int64)),
 			}, nil
 		case "message":
@@ -337,16 +347,16 @@ func (c *PubSub) ReceiveTimeout(timeout time.Duration) (interface{}, error) {
 		c.cmd = NewCmd()
 	}
 
-	cn, err := c.conn()
+	cn, err := c.connWithLock()
 	if err != nil {
 		return nil, err
 	}
 
-	err = cn.WithReader(timeout, func(rd *proto.Reader) error {
+	err = cn.WithReader(context.TODO(), timeout, func(rd *proto.Reader) error {
 		return c.cmd.readReply(rd)
 	})
 
-	c.releaseConn(cn, err, timeout > 0)
+	c.releaseConnWithLock(cn, err, timeout > 0)
 	if err != nil {
 		return nil, err
 	}
@@ -386,25 +396,103 @@ func (c *PubSub) ReceiveMessage() (*Message, error) {
 }
 
 // Channel returns a Go channel for concurrently receiving messages.
-// It periodically sends Ping messages to test connection health.
-// The channel is closed with PubSub. Receive* APIs can not be used
-// after channel is created.
+// The channel is closed together with the PubSub. If the Go channel
+// is blocked full for 30 seconds the message is dropped.
+// Receive* APIs can not be used after channel is created.
+//
+// go-redis periodically sends ping messages to test connection health
+// and re-subscribes if ping can not not received for 30 seconds.
 func (c *PubSub) Channel() <-chan *Message {
-	c.chOnce.Do(c.initChannel)
-	return c.ch
+	return c.ChannelSize(100)
 }
 
-func (c *PubSub) initChannel() {
-	c.ch = make(chan *Message, 100)
-	c.ping = make(chan struct{}, 10)
+// ChannelSize is like Channel, but creates a Go channel
+// with specified buffer size.
+func (c *PubSub) ChannelSize(size int) <-chan *Message {
+	c.chOnce.Do(func() {
+		c.initPing()
+		c.initMsgChan(size)
+	})
+	if c.msgCh == nil {
+		err := fmt.Errorf("redis: Channel can't be called after ChannelWithSubscriptions")
+		panic(err)
+	}
+	if cap(c.msgCh) != size {
+		err := fmt.Errorf("redis: PubSub.Channel size can not be changed once created")
+		panic(err)
+	}
+	return c.msgCh
+}
+
+// ChannelWithSubscriptions is like Channel, but message type can be either
+// *Subscription or *Message. Subscription messages can be used to detect
+// reconnections.
+//
+// ChannelWithSubscriptions can not be used together with Channel or ChannelSize.
+func (c *PubSub) ChannelWithSubscriptions(size int) <-chan interface{} {
+	c.chOnce.Do(func() {
+		c.initPing()
+		c.initAllChan(size)
+	})
+	if c.allCh == nil {
+		err := fmt.Errorf("redis: ChannelWithSubscriptions can't be called after Channel")
+		panic(err)
+	}
+	if cap(c.allCh) != size {
+		err := fmt.Errorf("redis: PubSub.Channel size can not be changed once created")
+		panic(err)
+	}
+	return c.allCh
+}
+
+func (c *PubSub) initPing() {
+	c.ping = make(chan struct{}, 1)
+	go func() {
+		timer := time.NewTimer(pingTimeout)
+		timer.Stop()
+
+		healthy := true
+		for {
+			timer.Reset(pingTimeout)
+			select {
+			case <-c.ping:
+				healthy = true
+				if !timer.Stop() {
+					<-timer.C
+				}
+			case <-timer.C:
+				pingErr := c.Ping()
+				if healthy {
+					healthy = false
+				} else {
+					if pingErr == nil {
+						pingErr = errPingTimeout
+					}
+					c.mu.Lock()
+					c.reconnect(pingErr)
+					healthy = true
+					c.mu.Unlock()
+				}
+			case <-c.exit:
+				return
+			}
+		}
+	}()
+}
 
+// initMsgChan must be in sync with initAllChan.
+func (c *PubSub) initMsgChan(size int) {
+	c.msgCh = make(chan *Message, size)
 	go func() {
+		timer := time.NewTimer(pingTimeout)
+		timer.Stop()
+
 		var errCount int
 		for {
 			msg, err := c.Receive()
 			if err != nil {
 				if err == pool.ErrClosed {
-					close(c.ch)
+					close(c.msgCh)
 					return
 				}
 				if errCount > 0 {
@@ -413,6 +501,7 @@ func (c *PubSub) initChannel() {
 				errCount++
 				continue
 			}
+
 			errCount = 0
 
 			// Any message is as good as a ping.
@@ -427,47 +516,80 @@ func (c *PubSub) initChannel() {
 			case *Pong:
 				// Ignore.
 			case *Message:
-				c.ch <- msg
+				timer.Reset(pingTimeout)
+				select {
+				case c.msgCh <- msg:
+					if !timer.Stop() {
+						<-timer.C
+					}
+				case <-timer.C:
+					internal.Logger.Printf(
+						"redis: %s channel is full for %s (message is dropped)", c, pingTimeout)
+				}
 			default:
-				internal.Logf("redis: unknown message: %T", msg)
+				internal.Logger.Printf("redis: unknown message type: %T", msg)
 			}
 		}
 	}()
+}
 
+// initAllChan must be in sync with initMsgChan.
+func (c *PubSub) initAllChan(size int) {
+	c.allCh = make(chan interface{}, size)
 	go func() {
-		const timeout = 5 * time.Second
-
-		timer := time.NewTimer(timeout)
+		timer := time.NewTimer(pingTimeout)
 		timer.Stop()
 
-		healthy := true
+		var errCount int
 		for {
-			timer.Reset(timeout)
-			select {
-			case <-c.ping:
-				healthy = true
-				if !timer.Stop() {
-					<-timer.C
+			msg, err := c.Receive()
+			if err != nil {
+				if err == pool.ErrClosed {
+					close(c.allCh)
+					return
 				}
-			case <-timer.C:
-				pingErr := c.Ping()
-				if healthy {
-					healthy = false
-				} else {
-					if pingErr == nil {
-						pingErr = errPingTimeout
-					}
-					c.mu.Lock()
-					c._reconnect(pingErr)
-					c.mu.Unlock()
+				if errCount > 0 {
+					time.Sleep(c.retryBackoff(errCount))
 				}
-			case <-c.exit:
-				return
+				errCount++
+				continue
+			}
+
+			errCount = 0
+
+			// Any message is as good as a ping.
+			select {
+			case c.ping <- struct{}{}:
+			default:
+			}
+
+			switch msg := msg.(type) {
+			case *Subscription:
+				c.sendMessage(msg, timer)
+			case *Pong:
+				// Ignore.
+			case *Message:
+				c.sendMessage(msg, timer)
+			default:
+				internal.Logger.Printf("redis: unknown message type: %T", msg)
 			}
 		}
 	}()
 }
 
+func (c *PubSub) sendMessage(msg interface{}, timer *time.Timer) {
+	timer.Reset(pingTimeout)
+	select {
+	case c.allCh <- msg:
+		if !timer.Stop() {
+			<-timer.C
+		}
+	case <-timer.C:
+		internal.Logger.Printf(
+			"redis: %s channel is full for %s (message is dropped)", c, pingTimeout)
+	}
+}
+
 func (c *PubSub) retryBackoff(attempt int) time.Duration {
 	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
 }
diff --git a/vendor/github.com/go-redis/redis/v7/redis.go b/vendor/github.com/go-redis/redis/v7/redis.go
new file mode 100644
index 0000000000..3d9dfed7db
--- /dev/null
+++ b/vendor/github.com/go-redis/redis/v7/redis.go
@@ -0,0 +1,758 @@
+package redis
+
+import (
+	"context"
+	"fmt"
+	"log"
+	"time"
+
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/pool"
+	"github.com/go-redis/redis/v7/internal/proto"
+)
+
+// Nil reply returned by Redis when key does not exist.
+const Nil = proto.Nil
+
+func SetLogger(logger *log.Logger) {
+	internal.Logger = logger
+}
+
+//------------------------------------------------------------------------------
+
+type Hook interface {
+	BeforeProcess(ctx context.Context, cmd Cmder) (context.Context, error)
+	AfterProcess(ctx context.Context, cmd Cmder) error
+
+	BeforeProcessPipeline(ctx context.Context, cmds []Cmder) (context.Context, error)
+	AfterProcessPipeline(ctx context.Context, cmds []Cmder) error
+}
+
+type hooks struct {
+	hooks []Hook
+}
+
+func (hs *hooks) lock() {
+	hs.hooks = hs.hooks[:len(hs.hooks):len(hs.hooks)]
+}
+
+func (hs hooks) clone() hooks {
+	clone := hs
+	clone.lock()
+	return clone
+}
+
+func (hs *hooks) AddHook(hook Hook) {
+	hs.hooks = append(hs.hooks, hook)
+}
+
+func (hs hooks) process(
+	ctx context.Context, cmd Cmder, fn func(context.Context, Cmder) error,
+) error {
+	ctx, err := hs.beforeProcess(ctx, cmd)
+	if err != nil {
+		cmd.SetErr(err)
+		return err
+	}
+
+	cmdErr := fn(ctx, cmd)
+
+	if err := hs.afterProcess(ctx, cmd); err != nil {
+		cmd.SetErr(err)
+		return err
+	}
+
+	return cmdErr
+}
+
+func (hs hooks) beforeProcess(ctx context.Context, cmd Cmder) (context.Context, error) {
+	for _, h := range hs.hooks {
+		var err error
+		ctx, err = h.BeforeProcess(ctx, cmd)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return ctx, nil
+}
+
+func (hs hooks) afterProcess(ctx context.Context, cmd Cmder) error {
+	var firstErr error
+	for _, h := range hs.hooks {
+		err := h.AfterProcess(ctx, cmd)
+		if err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+	return firstErr
+}
+
+func (hs hooks) processPipeline(
+	ctx context.Context, cmds []Cmder, fn func(context.Context, []Cmder) error,
+) error {
+	ctx, err := hs.beforeProcessPipeline(ctx, cmds)
+	if err != nil {
+		setCmdsErr(cmds, err)
+		return err
+	}
+
+	cmdsErr := fn(ctx, cmds)
+
+	if err := hs.afterProcessPipeline(ctx, cmds); err != nil {
+		setCmdsErr(cmds, err)
+		return err
+	}
+
+	return cmdsErr
+}
+
+func (hs hooks) beforeProcessPipeline(ctx context.Context, cmds []Cmder) (context.Context, error) {
+	for _, h := range hs.hooks {
+		var err error
+		ctx, err = h.BeforeProcessPipeline(ctx, cmds)
+		if err != nil {
+			return nil, err
+		}
+	}
+	return ctx, nil
+}
+
+func (hs hooks) afterProcessPipeline(ctx context.Context, cmds []Cmder) error {
+	var firstErr error
+	for _, h := range hs.hooks {
+		err := h.AfterProcessPipeline(ctx, cmds)
+		if err != nil && firstErr == nil {
+			firstErr = err
+		}
+	}
+	return firstErr
+}
+
+func (hs hooks) processTxPipeline(
+	ctx context.Context, cmds []Cmder, fn func(context.Context, []Cmder) error,
+) error {
+	cmds = wrapMultiExec(cmds)
+	return hs.processPipeline(ctx, cmds, fn)
+}
+
+//------------------------------------------------------------------------------
+
+type baseClient struct {
+	opt      *Options
+	connPool pool.Pooler
+
+	onClose func() error // hook called when client is closed
+}
+
+func newBaseClient(opt *Options, connPool pool.Pooler) *baseClient {
+	return &baseClient{
+		opt:      opt,
+		connPool: connPool,
+	}
+}
+
+func (c *baseClient) clone() *baseClient {
+	clone := *c
+	return &clone
+}
+
+func (c *baseClient) withTimeout(timeout time.Duration) *baseClient {
+	opt := c.opt.clone()
+	opt.ReadTimeout = timeout
+	opt.WriteTimeout = timeout
+
+	clone := c.clone()
+	clone.opt = opt
+
+	return clone
+}
+
+func (c *baseClient) String() string {
+	return fmt.Sprintf("Redis<%s db:%d>", c.getAddr(), c.opt.DB)
+}
+
+func (c *baseClient) newConn(ctx context.Context) (*pool.Conn, error) {
+	cn, err := c.connPool.NewConn(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.initConn(ctx, cn)
+	if err != nil {
+		_ = c.connPool.CloseConn(cn)
+		return nil, err
+	}
+
+	return cn, nil
+}
+
+func (c *baseClient) getConn(ctx context.Context) (*pool.Conn, error) {
+	if c.opt.Limiter != nil {
+		err := c.opt.Limiter.Allow()
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	cn, err := c._getConn(ctx)
+	if err != nil {
+		if c.opt.Limiter != nil {
+			c.opt.Limiter.ReportResult(err)
+		}
+		return nil, err
+	}
+	return cn, nil
+}
+
+func (c *baseClient) _getConn(ctx context.Context) (*pool.Conn, error) {
+	cn, err := c.connPool.Get(ctx)
+	if err != nil {
+		return nil, err
+	}
+
+	err = c.initConn(ctx, cn)
+	if err != nil {
+		c.connPool.Remove(cn, err)
+		if err := internal.Unwrap(err); err != nil {
+			return nil, err
+		}
+		return nil, err
+	}
+
+	return cn, nil
+}
+
+func (c *baseClient) initConn(ctx context.Context, cn *pool.Conn) error {
+	if cn.Inited {
+		return nil
+	}
+	cn.Inited = true
+
+	if c.opt.Password == "" &&
+		c.opt.DB == 0 &&
+		!c.opt.readOnly &&
+		c.opt.OnConnect == nil {
+		return nil
+	}
+
+	connPool := pool.NewSingleConnPool(nil)
+	connPool.SetConn(cn)
+	conn := newConn(ctx, c.opt, connPool)
+
+	_, err := conn.Pipelined(func(pipe Pipeliner) error {
+		if c.opt.Password != "" {
+			if c.opt.Username != "" {
+				pipe.AuthACL(c.opt.Username, c.opt.Password)
+			} else {
+				pipe.Auth(c.opt.Password)
+			}
+		}
+
+		if c.opt.DB > 0 {
+			pipe.Select(c.opt.DB)
+		}
+
+		if c.opt.readOnly {
+			pipe.ReadOnly()
+		}
+
+		return nil
+	})
+	if err != nil {
+		return err
+	}
+
+	if c.opt.OnConnect != nil {
+		return c.opt.OnConnect(conn)
+	}
+	return nil
+}
+
+func (c *baseClient) releaseConn(cn *pool.Conn, err error) {
+	if c.opt.Limiter != nil {
+		c.opt.Limiter.ReportResult(err)
+	}
+
+	if isBadConn(err, false) {
+		c.connPool.Remove(cn, err)
+	} else {
+		c.connPool.Put(cn)
+	}
+}
+
+func (c *baseClient) withConn(
+	ctx context.Context, fn func(context.Context, *pool.Conn) error,
+) error {
+	cn, err := c.getConn(ctx)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		c.releaseConn(cn, err)
+	}()
+
+	err = fn(ctx, cn)
+	return err
+}
+
+func (c *baseClient) process(ctx context.Context, cmd Cmder) error {
+	err := c._process(ctx, cmd)
+	if err != nil {
+		cmd.SetErr(err)
+		return err
+	}
+	return nil
+}
+
+func (c *baseClient) _process(ctx context.Context, cmd Cmder) error {
+	var lastErr error
+	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
+		if attempt > 0 {
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
+		}
+
+		retryTimeout := true
+		lastErr = c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+			err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
+				return writeCmd(wr, cmd)
+			})
+			if err != nil {
+				return err
+			}
+
+			err = cn.WithReader(ctx, c.cmdTimeout(cmd), cmd.readReply)
+			if err != nil {
+				retryTimeout = cmd.readTimeout() == nil
+				return err
+			}
+
+			return nil
+		})
+		if lastErr == nil || !isRetryableError(lastErr, retryTimeout) {
+			return lastErr
+		}
+	}
+	return lastErr
+}
+
+func (c *baseClient) retryBackoff(attempt int) time.Duration {
+	return internal.RetryBackoff(attempt, c.opt.MinRetryBackoff, c.opt.MaxRetryBackoff)
+}
+
+func (c *baseClient) cmdTimeout(cmd Cmder) time.Duration {
+	if timeout := cmd.readTimeout(); timeout != nil {
+		t := *timeout
+		if t == 0 {
+			return 0
+		}
+		return t + 10*time.Second
+	}
+	return c.opt.ReadTimeout
+}
+
+// Close closes the client, releasing any open resources.
+//
+// It is rare to Close a Client, as the Client is meant to be
+// long-lived and shared between many goroutines.
+func (c *baseClient) Close() error {
+	var firstErr error
+	if c.onClose != nil {
+		if err := c.onClose(); err != nil {
+			firstErr = err
+		}
+	}
+	if err := c.connPool.Close(); err != nil && firstErr == nil {
+		firstErr = err
+	}
+	return firstErr
+}
+
+func (c *baseClient) getAddr() string {
+	return c.opt.Addr
+}
+
+func (c *baseClient) processPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.generalProcessPipeline(ctx, cmds, c.pipelineProcessCmds)
+}
+
+func (c *baseClient) processTxPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.generalProcessPipeline(ctx, cmds, c.txPipelineProcessCmds)
+}
+
+type pipelineProcessor func(context.Context, *pool.Conn, []Cmder) (bool, error)
+
+func (c *baseClient) generalProcessPipeline(
+	ctx context.Context, cmds []Cmder, p pipelineProcessor,
+) error {
+	err := c._generalProcessPipeline(ctx, cmds, p)
+	if err != nil {
+		setCmdsErr(cmds, err)
+		return err
+	}
+	return cmdsFirstErr(cmds)
+}
+
+func (c *baseClient) _generalProcessPipeline(
+	ctx context.Context, cmds []Cmder, p pipelineProcessor,
+) error {
+	var lastErr error
+	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
+		if attempt > 0 {
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
+		}
+
+		var canRetry bool
+		lastErr = c.withConn(ctx, func(ctx context.Context, cn *pool.Conn) error {
+			var err error
+			canRetry, err = p(ctx, cn, cmds)
+			return err
+		})
+		if lastErr == nil || !canRetry || !isRetryableError(lastErr, true) {
+			return lastErr
+		}
+	}
+	return lastErr
+}
+
+func (c *baseClient) pipelineProcessCmds(
+	ctx context.Context, cn *pool.Conn, cmds []Cmder,
+) (bool, error) {
+	err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	})
+	if err != nil {
+		return true, err
+	}
+
+	err = cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		return pipelineReadCmds(rd, cmds)
+	})
+	return true, err
+}
+
+func pipelineReadCmds(rd *proto.Reader, cmds []Cmder) error {
+	for _, cmd := range cmds {
+		err := cmd.readReply(rd)
+		if err != nil && !isRedisError(err) {
+			return err
+		}
+	}
+	return nil
+}
+
+func (c *baseClient) txPipelineProcessCmds(
+	ctx context.Context, cn *pool.Conn, cmds []Cmder,
+) (bool, error) {
+	err := cn.WithWriter(ctx, c.opt.WriteTimeout, func(wr *proto.Writer) error {
+		return writeCmds(wr, cmds)
+	})
+	if err != nil {
+		return true, err
+	}
+
+	err = cn.WithReader(ctx, c.opt.ReadTimeout, func(rd *proto.Reader) error {
+		statusCmd := cmds[0].(*StatusCmd)
+		// Trim multi and exec.
+		cmds = cmds[1 : len(cmds)-1]
+
+		err := txPipelineReadQueued(rd, statusCmd, cmds)
+		if err != nil {
+			return err
+		}
+
+		return pipelineReadCmds(rd, cmds)
+	})
+	return false, err
+}
+
+func wrapMultiExec(cmds []Cmder) []Cmder {
+	if len(cmds) == 0 {
+		panic("not reached")
+	}
+	cmds = append(cmds, make([]Cmder, 2)...)
+	copy(cmds[1:], cmds[:len(cmds)-2])
+	cmds[0] = NewStatusCmd("multi")
+	cmds[len(cmds)-1] = NewSliceCmd("exec")
+	return cmds
+}
+
+func txPipelineReadQueued(rd *proto.Reader, statusCmd *StatusCmd, cmds []Cmder) error {
+	// Parse queued replies.
+	if err := statusCmd.readReply(rd); err != nil {
+		return err
+	}
+
+	for range cmds {
+		if err := statusCmd.readReply(rd); err != nil && !isRedisError(err) {
+			return err
+		}
+	}
+
+	// Parse number of replies.
+	line, err := rd.ReadLine()
+	if err != nil {
+		if err == Nil {
+			err = TxFailedErr
+		}
+		return err
+	}
+
+	switch line[0] {
+	case proto.ErrorReply:
+		return proto.ParseErrorReply(line)
+	case proto.ArrayReply:
+		// ok
+	default:
+		err := fmt.Errorf("redis: expected '*', but got line %q", line)
+		return err
+	}
+
+	return nil
+}
+
+//------------------------------------------------------------------------------
+
+// Client is a Redis client representing a pool of zero or more
+// underlying connections. It's safe for concurrent use by multiple
+// goroutines.
+type Client struct {
+	*baseClient
+	cmdable
+	hooks
+	ctx context.Context
+}
+
+// NewClient returns a client to the Redis Server specified by Options.
+func NewClient(opt *Options) *Client {
+	opt.init()
+
+	c := Client{
+		baseClient: newBaseClient(opt, newConnPool(opt)),
+		ctx:        context.Background(),
+	}
+	c.cmdable = c.Process
+
+	return &c
+}
+
+func (c *Client) clone() *Client {
+	clone := *c
+	clone.cmdable = clone.Process
+	clone.hooks.lock()
+	return &clone
+}
+
+func (c *Client) WithTimeout(timeout time.Duration) *Client {
+	clone := c.clone()
+	clone.baseClient = c.baseClient.withTimeout(timeout)
+	return clone
+}
+
+func (c *Client) Context() context.Context {
+	return c.ctx
+}
+
+func (c *Client) WithContext(ctx context.Context) *Client {
+	if ctx == nil {
+		panic("nil context")
+	}
+	clone := c.clone()
+	clone.ctx = ctx
+	return clone
+}
+
+func (c *Client) Conn() *Conn {
+	return newConn(c.ctx, c.opt, pool.NewSingleConnPool(c.connPool))
+}
+
+// Do creates a Cmd from the args and processes the cmd.
+func (c *Client) Do(args ...interface{}) *Cmd {
+	return c.DoContext(c.ctx, args...)
+}
+
+func (c *Client) DoContext(ctx context.Context, args ...interface{}) *Cmd {
+	cmd := NewCmd(args...)
+	_ = c.ProcessContext(ctx, cmd)
+	return cmd
+}
+
+func (c *Client) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
+}
+
+func (c *Client) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.hooks.process(ctx, cmd, c.baseClient.process)
+}
+
+func (c *Client) processPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processPipeline(ctx, cmds, c.baseClient.processPipeline)
+}
+
+func (c *Client) processTxPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processTxPipeline(ctx, cmds, c.baseClient.processTxPipeline)
+}
+
+// Options returns read-only Options that were used to create the client.
+func (c *Client) Options() *Options {
+	return c.opt
+}
+
+type PoolStats pool.Stats
+
+// PoolStats returns connection pool stats.
+func (c *Client) PoolStats() *PoolStats {
+	stats := c.connPool.Stats()
+	return (*PoolStats)(stats)
+}
+
+func (c *Client) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(fn)
+}
+
+func (c *Client) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		ctx:  c.ctx,
+		exec: c.processPipeline,
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Client) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(fn)
+}
+
+// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
+func (c *Client) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		ctx:  c.ctx,
+		exec: c.processTxPipeline,
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Client) pubSub() *PubSub {
+	pubsub := &PubSub{
+		opt: c.opt,
+
+		newConn: func(channels []string) (*pool.Conn, error) {
+			return c.newConn(context.TODO())
+		},
+		closeConn: c.connPool.CloseConn,
+	}
+	pubsub.init()
+	return pubsub
+}
+
+// Subscribe subscribes the client to the specified channels.
+// Channels can be omitted to create empty subscription.
+// Note that this method does not wait on a response from Redis, so the
+// subscription may not be active immediately. To force the connection to wait,
+// you may call the Receive() method on the returned *PubSub like so:
+//
+//    sub := client.Subscribe(queryResp)
+//    iface, err := sub.Receive()
+//    if err != nil {
+//        // handle error
+//    }
+//
+//    // Should be *Subscription, but others are possible if other actions have been
+//    // taken on sub since it was created.
+//    switch iface.(type) {
+//    case *Subscription:
+//        // subscribe succeeded
+//    case *Message:
+//        // received first message
+//    case *Pong:
+//        // pong received
+//    default:
+//        // handle error
+//    }
+//
+//    ch := sub.Channel()
+func (c *Client) Subscribe(channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.Subscribe(channels...)
+	}
+	return pubsub
+}
+
+// PSubscribe subscribes the client to the given patterns.
+// Patterns can be omitted to create empty subscription.
+func (c *Client) PSubscribe(channels ...string) *PubSub {
+	pubsub := c.pubSub()
+	if len(channels) > 0 {
+		_ = pubsub.PSubscribe(channels...)
+	}
+	return pubsub
+}
+
+//------------------------------------------------------------------------------
+
+type conn struct {
+	baseClient
+	cmdable
+	statefulCmdable
+}
+
+// Conn is like Client, but its pool contains single connection.
+type Conn struct {
+	*conn
+	ctx context.Context
+}
+
+func newConn(ctx context.Context, opt *Options, connPool pool.Pooler) *Conn {
+	c := Conn{
+		conn: &conn{
+			baseClient: baseClient{
+				opt:      opt,
+				connPool: connPool,
+			},
+		},
+		ctx: ctx,
+	}
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+	return &c
+}
+
+func (c *Conn) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
+}
+
+func (c *Conn) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.baseClient.process(ctx, cmd)
+}
+
+func (c *Conn) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(fn)
+}
+
+func (c *Conn) Pipeline() Pipeliner {
+	pipe := Pipeline{
+		ctx:  c.ctx,
+		exec: c.processPipeline,
+	}
+	pipe.init()
+	return &pipe
+}
+
+func (c *Conn) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(fn)
+}
+
+// TxPipeline acts like Pipeline, but wraps queued commands with MULTI/EXEC.
+func (c *Conn) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		ctx:  c.ctx,
+		exec: c.processTxPipeline,
+	}
+	pipe.init()
+	return &pipe
+}
diff --git a/vendor/github.com/go-redis/redis/result.go b/vendor/github.com/go-redis/redis/v7/result.go
index e438f260b4..5bec26ca95 100644
--- a/vendor/github.com/go-redis/redis/result.go
+++ b/vendor/github.com/go-redis/redis/v7/result.go
@@ -6,7 +6,7 @@ import "time"
 func NewCmdResult(val interface{}, err error) *Cmd {
 	var cmd Cmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -14,7 +14,7 @@ func NewCmdResult(val interface{}, err error) *Cmd {
 func NewSliceResult(val []interface{}, err error) *SliceCmd {
 	var cmd SliceCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -22,7 +22,7 @@ func NewSliceResult(val []interface{}, err error) *SliceCmd {
 func NewStatusResult(val string, err error) *StatusCmd {
 	var cmd StatusCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -30,7 +30,7 @@ func NewStatusResult(val string, err error) *StatusCmd {
 func NewIntResult(val int64, err error) *IntCmd {
 	var cmd IntCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -38,7 +38,7 @@ func NewIntResult(val int64, err error) *IntCmd {
 func NewDurationResult(val time.Duration, err error) *DurationCmd {
 	var cmd DurationCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -46,7 +46,7 @@ func NewDurationResult(val time.Duration, err error) *DurationCmd {
 func NewBoolResult(val bool, err error) *BoolCmd {
 	var cmd BoolCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -54,7 +54,7 @@ func NewBoolResult(val bool, err error) *BoolCmd {
 func NewStringResult(val string, err error) *StringCmd {
 	var cmd StringCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -62,7 +62,7 @@ func NewStringResult(val string, err error) *StringCmd {
 func NewFloatResult(val float64, err error) *FloatCmd {
 	var cmd FloatCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -70,7 +70,7 @@ func NewFloatResult(val float64, err error) *FloatCmd {
 func NewStringSliceResult(val []string, err error) *StringSliceCmd {
 	var cmd StringSliceCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -78,7 +78,7 @@ func NewStringSliceResult(val []string, err error) *StringSliceCmd {
 func NewBoolSliceResult(val []bool, err error) *BoolSliceCmd {
 	var cmd BoolSliceCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -86,7 +86,7 @@ func NewBoolSliceResult(val []bool, err error) *BoolSliceCmd {
 func NewStringStringMapResult(val map[string]string, err error) *StringStringMapCmd {
 	var cmd StringStringMapCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -94,7 +94,15 @@ func NewStringStringMapResult(val map[string]string, err error) *StringStringMap
 func NewStringIntMapCmdResult(val map[string]int64, err error) *StringIntMapCmd {
 	var cmd StringIntMapCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewTimeCmdResult returns a TimeCmd initialised with val and err for testing
+func NewTimeCmdResult(val time.Time, err error) *TimeCmd {
+	var cmd TimeCmd
+	cmd.val = val
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -102,7 +110,15 @@ func NewStringIntMapCmdResult(val map[string]int64, err error) *StringIntMapCmd
 func NewZSliceCmdResult(val []Z, err error) *ZSliceCmd {
 	var cmd ZSliceCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewZWithKeyCmdResult returns a NewZWithKeyCmd initialised with val and err for testing
+func NewZWithKeyCmdResult(val *ZWithKey, err error) *ZWithKeyCmd {
+	var cmd ZWithKeyCmd
+	cmd.val = val
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -111,7 +127,7 @@ func NewScanCmdResult(keys []string, cursor uint64, err error) *ScanCmd {
 	var cmd ScanCmd
 	cmd.page = keys
 	cmd.cursor = cursor
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -119,7 +135,7 @@ func NewScanCmdResult(keys []string, cursor uint64, err error) *ScanCmd {
 func NewClusterSlotsCmdResult(val []ClusterSlot, err error) *ClusterSlotsCmd {
 	var cmd ClusterSlotsCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -127,7 +143,15 @@ func NewClusterSlotsCmdResult(val []ClusterSlot, err error) *ClusterSlotsCmd {
 func NewGeoLocationCmdResult(val []GeoLocation, err error) *GeoLocationCmd {
 	var cmd GeoLocationCmd
 	cmd.locations = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewGeoPosCmdResult returns a GeoPosCmd initialised with val and err for testing
+func NewGeoPosCmdResult(val []*GeoPos, err error) *GeoPosCmd {
+	var cmd GeoPosCmd
+	cmd.val = val
+	cmd.SetErr(err)
 	return &cmd
 }
 
@@ -135,6 +159,22 @@ func NewGeoLocationCmdResult(val []GeoLocation, err error) *GeoLocationCmd {
 func NewCommandsInfoCmdResult(val map[string]*CommandInfo, err error) *CommandsInfoCmd {
 	var cmd CommandsInfoCmd
 	cmd.val = val
-	cmd.setErr(err)
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewXMessageSliceCmdResult returns a XMessageSliceCmd initialised with val and err for testing
+func NewXMessageSliceCmdResult(val []XMessage, err error) *XMessageSliceCmd {
+	var cmd XMessageSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
+	return &cmd
+}
+
+// NewXStreamSliceCmdResult returns a XStreamSliceCmd initialised with val and err for testing
+func NewXStreamSliceCmdResult(val []XStream, err error) *XStreamSliceCmd {
+	var cmd XStreamSliceCmd
+	cmd.val = val
+	cmd.SetErr(err)
 	return &cmd
 }
diff --git a/vendor/github.com/go-redis/redis/ring.go b/vendor/github.com/go-redis/redis/v7/ring.go
index 250e5f640c..44fc623f8a 100644
--- a/vendor/github.com/go-redis/redis/ring.go
+++ b/vendor/github.com/go-redis/redis/v7/ring.go
@@ -10,10 +10,10 @@ import (
 	"sync/atomic"
 	"time"
 
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/consistenthash"
-	"github.com/go-redis/redis/internal/hashtag"
-	"github.com/go-redis/redis/internal/pool"
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/consistenthash"
+	"github.com/go-redis/redis/v7/internal/hashtag"
+	"github.com/go-redis/redis/v7/internal/pool"
 )
 
 // Hash is type of hash function used in consistent hash.
@@ -27,6 +27,10 @@ type RingOptions struct {
 	// Map of name => host:port addresses of ring shards.
 	Addrs map[string]string
 
+	// Map of name => password of ring shards, to allow different shards to have
+	// different passwords. It will be ignored if the Password field is set.
+	Passwords map[string]string
+
 	// Frequency of PING commands sent to check shards availability.
 	// Shard is considered down after 3 subsequent failed checks.
 	HeartbeatFrequency time.Duration
@@ -52,6 +56,12 @@ type RingOptions struct {
 	//  See https://arxiv.org/abs/1406.2294 for reference
 	HashReplicas int
 
+	// NewClient creates a shard client with provided name and options.
+	NewClient func(name string, opt *Options) *Client
+
+	// Optional hook that is called when a new shard is created.
+	OnNewShard func(*Client)
+
 	// Following options are copied from Options struct.
 
 	OnConnect func(*Conn) error
@@ -98,12 +108,12 @@ func (opt *RingOptions) init() {
 	}
 }
 
-func (opt *RingOptions) clientOptions() *Options {
+func (opt *RingOptions) clientOptions(shard string) *Options {
 	return &Options{
 		OnConnect: opt.OnConnect,
 
 		DB:       opt.DB,
-		Password: opt.Password,
+		Password: opt.getPassword(shard),
 
 		DialTimeout:  opt.DialTimeout,
 		ReadTimeout:  opt.ReadTimeout,
@@ -118,6 +128,13 @@ func (opt *RingOptions) clientOptions() *Options {
 	}
 }
 
+func (opt *RingOptions) getPassword(shard string) string {
+	if opt.Password == "" {
+		return opt.Passwords[shard]
+	}
+	return opt.Password
+}
+
 //------------------------------------------------------------------------------
 
 type ringShard struct {
@@ -260,7 +277,7 @@ func (c *ringShards) Heartbeat(frequency time.Duration) {
 		for _, shard := range shards {
 			err := shard.Client.Ping().Err()
 			if shard.Vote(err == nil || err == pool.ErrPoolTimeout) {
-				internal.Logf("ring shard state changed: %s", shard)
+				internal.Logger.Printf("ring shard state changed: %s", shard)
 				rebalance = true
 			}
 		}
@@ -273,9 +290,13 @@ func (c *ringShards) Heartbeat(frequency time.Duration) {
 
 // rebalance removes dead shards from the Ring.
 func (c *ringShards) rebalance() {
+	c.mu.RLock()
+	shards := c.shards
+	c.mu.RUnlock()
+
 	hash := newConsistentHash(c.opt)
 	var shardsNum int
-	for name, shard := range c.shards {
+	for name, shard := range shards {
 		if shard.IsUp() {
 			hash.Add(name)
 			shardsNum++
@@ -319,6 +340,12 @@ func (c *ringShards) Close() error {
 
 //------------------------------------------------------------------------------
 
+type ring struct {
+	opt           *RingOptions
+	shards        *ringShards
+	cmdsInfoCache *cmdsInfoCache //nolint:structcheck
+}
+
 // Ring is a Redis client that uses consistent hashing to distribute
 // keys across multiple Redis servers (shards). It's safe for
 // concurrent use by multiple goroutines.
@@ -334,61 +361,82 @@ func (c *ringShards) Close() error {
 // and can tolerate losing data when one of the servers dies.
 // Otherwise you should use Redis Cluster.
 type Ring struct {
+	*ring
 	cmdable
-
+	hooks
 	ctx context.Context
-
-	opt           *RingOptions
-	shards        *ringShards
-	cmdsInfoCache *cmdsInfoCache
-
-	process         func(Cmder) error
-	processPipeline func([]Cmder) error
 }
 
 func NewRing(opt *RingOptions) *Ring {
 	opt.init()
 
-	ring := &Ring{
-		opt:    opt,
-		shards: newRingShards(opt),
+	ring := Ring{
+		ring: &ring{
+			opt:    opt,
+			shards: newRingShards(opt),
+		},
+		ctx: context.Background(),
 	}
 	ring.cmdsInfoCache = newCmdsInfoCache(ring.cmdsInfo)
-
-	ring.process = ring.defaultProcess
-	ring.processPipeline = ring.defaultProcessPipeline
-	ring.cmdable.setProcessor(ring.Process)
+	ring.cmdable = ring.Process
 
 	for name, addr := range opt.Addrs {
-		clopt := opt.clientOptions()
-		clopt.Addr = addr
-		ring.shards.Add(name, NewClient(clopt))
+		shard := newRingShard(opt, name, addr)
+		ring.shards.Add(name, shard)
 	}
 
 	go ring.shards.Heartbeat(opt.HeartbeatFrequency)
 
-	return ring
+	return &ring
 }
 
-func (c *Ring) Context() context.Context {
-	if c.ctx != nil {
-		return c.ctx
+func newRingShard(opt *RingOptions, name, addr string) *Client {
+	clopt := opt.clientOptions(name)
+	clopt.Addr = addr
+	var shard *Client
+	if opt.NewClient != nil {
+		shard = opt.NewClient(name, clopt)
+	} else {
+		shard = NewClient(clopt)
 	}
-	return context.Background()
+	if opt.OnNewShard != nil {
+		opt.OnNewShard(shard)
+	}
+	return shard
+}
+
+func (c *Ring) Context() context.Context {
+	return c.ctx
 }
 
 func (c *Ring) WithContext(ctx context.Context) *Ring {
 	if ctx == nil {
 		panic("nil context")
 	}
-	c2 := c.copy()
-	c2.ctx = ctx
-	return c2
+	clone := *c
+	clone.cmdable = clone.Process
+	clone.hooks.lock()
+	clone.ctx = ctx
+	return &clone
 }
 
-func (c *Ring) copy() *Ring {
-	cp := *c
-	return &cp
+// Do creates a Cmd from the args and processes the cmd.
+func (c *Ring) Do(args ...interface{}) *Cmd {
+	return c.DoContext(c.ctx, args...)
+}
+
+func (c *Ring) DoContext(ctx context.Context, args ...interface{}) *Cmd {
+	cmd := NewCmd(args...)
+	_ = c.ProcessContext(ctx, cmd)
+	return cmd
+}
+
+func (c *Ring) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
+}
+
+func (c *Ring) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.hooks.process(ctx, cmd, c.process)
 }
 
 // Options returns read-only Options that were used to create the client.
@@ -428,7 +476,7 @@ func (c *Ring) Subscribe(channels ...string) *PubSub {
 
 	shard, err := c.shards.GetByKey(channels[0])
 	if err != nil {
-		// TODO: return PubSub with sticky error
+		//TODO: return PubSub with sticky error
 		panic(err)
 	}
 	return shard.Client.Subscribe(channels...)
@@ -442,7 +490,7 @@ func (c *Ring) PSubscribe(channels ...string) *PubSub {
 
 	shard, err := c.shards.GetByKey(channels[0])
 	if err != nil {
-		// TODO: return PubSub with sticky error
+		//TODO: return PubSub with sticky error
 		panic(err)
 	}
 	return shard.Client.PSubscribe(channels...)
@@ -503,7 +551,7 @@ func (c *Ring) cmdInfo(name string) *CommandInfo {
 	}
 	info := cmdsInfo[name]
 	if info == nil {
-		internal.Logf("info for cmd=%s not found", name)
+		internal.Logger.Printf("info for cmd=%s not found", name)
 	}
 	return info
 }
@@ -518,65 +566,78 @@ func (c *Ring) cmdShard(cmd Cmder) (*ringShard, error) {
 	return c.shards.GetByKey(firstKey)
 }
 
-// Do creates a Cmd from the args and processes the cmd.
-func (c *Ring) Do(args ...interface{}) *Cmd {
-	cmd := NewCmd(args...)
-	c.Process(cmd)
-	return cmd
-}
-
-func (c *Ring) WrapProcess(
-	fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error,
-) {
-	c.process = fn(c.process)
-}
-
-func (c *Ring) Process(cmd Cmder) error {
-	return c.process(cmd)
+func (c *Ring) process(ctx context.Context, cmd Cmder) error {
+	err := c._process(ctx, cmd)
+	if err != nil {
+		cmd.SetErr(err)
+		return err
+	}
+	return nil
 }
 
-func (c *Ring) defaultProcess(cmd Cmder) error {
+func (c *Ring) _process(ctx context.Context, cmd Cmder) error {
+	var lastErr error
 	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
 		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
+			if err := internal.Sleep(ctx, c.retryBackoff(attempt)); err != nil {
+				return err
+			}
 		}
 
 		shard, err := c.cmdShard(cmd)
 		if err != nil {
-			cmd.setErr(err)
 			return err
 		}
 
-		err = shard.Client.Process(cmd)
-		if err == nil {
-			return nil
-		}
-		if !internal.IsRetryableError(err, cmd.readTimeout() == nil) {
-			return err
+		lastErr = shard.Client.ProcessContext(ctx, cmd)
+		if lastErr == nil || !isRetryableError(lastErr, cmd.readTimeout() == nil) {
+			return lastErr
 		}
 	}
-	return cmd.Err()
+	return lastErr
+}
+
+func (c *Ring) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(fn)
 }
 
 func (c *Ring) Pipeline() Pipeliner {
 	pipe := Pipeline{
+		ctx:  c.ctx,
 		exec: c.processPipeline,
 	}
-	pipe.cmdable.setProcessor(pipe.Process)
+	pipe.init()
 	return &pipe
 }
 
-func (c *Ring) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.Pipeline().Pipelined(fn)
+func (c *Ring) processPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		return c.generalProcessPipeline(ctx, cmds, false)
+	})
+}
+
+func (c *Ring) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.TxPipeline().Pipelined(fn)
+}
+
+func (c *Ring) TxPipeline() Pipeliner {
+	pipe := Pipeline{
+		ctx:  c.ctx,
+		exec: c.processTxPipeline,
+	}
+	pipe.init()
+	return &pipe
 }
 
-func (c *Ring) WrapProcessPipeline(
-	fn func(oldProcess func([]Cmder) error) func([]Cmder) error,
-) {
-	c.processPipeline = fn(c.processPipeline)
+func (c *Ring) processTxPipeline(ctx context.Context, cmds []Cmder) error {
+	return c.hooks.processPipeline(ctx, cmds, func(ctx context.Context, cmds []Cmder) error {
+		return c.generalProcessPipeline(ctx, cmds, true)
+	})
 }
 
-func (c *Ring) defaultProcessPipeline(cmds []Cmder) error {
+func (c *Ring) generalProcessPipeline(
+	ctx context.Context, cmds []Cmder, tx bool,
+) error {
 	cmdsMap := make(map[string][]Cmder)
 	for _, cmd := range cmds {
 		cmdInfo := c.cmdInfo(cmd.Name())
@@ -587,62 +648,36 @@ func (c *Ring) defaultProcessPipeline(cmds []Cmder) error {
 		cmdsMap[hash] = append(cmdsMap[hash], cmd)
 	}
 
-	for attempt := 0; attempt <= c.opt.MaxRetries; attempt++ {
-		if attempt > 0 {
-			time.Sleep(c.retryBackoff(attempt))
-		}
-
-		var mu sync.Mutex
-		var failedCmdsMap map[string][]Cmder
-		var wg sync.WaitGroup
-
-		for hash, cmds := range cmdsMap {
-			wg.Add(1)
-			go func(hash string, cmds []Cmder) {
-				defer wg.Done()
-
-				shard, err := c.shards.GetByHash(hash)
-				if err != nil {
-					setCmdsErr(cmds, err)
-					return
-				}
-
-				cn, err := shard.Client.getConn()
-				if err != nil {
-					setCmdsErr(cmds, err)
-					return
-				}
-
-				canRetry, err := shard.Client.pipelineProcessCmds(cn, cmds)
-				shard.Client.releaseConnStrict(cn, err)
-
-				if canRetry && internal.IsRetryableError(err, true) {
-					mu.Lock()
-					if failedCmdsMap == nil {
-						failedCmdsMap = make(map[string][]Cmder)
-					}
-					failedCmdsMap[hash] = cmds
-					mu.Unlock()
-				}
-			}(hash, cmds)
-		}
+	var wg sync.WaitGroup
+	for hash, cmds := range cmdsMap {
+		wg.Add(1)
+		go func(hash string, cmds []Cmder) {
+			defer wg.Done()
 
-		wg.Wait()
-		if len(failedCmdsMap) == 0 {
-			break
-		}
-		cmdsMap = failedCmdsMap
+			_ = c.processShardPipeline(ctx, hash, cmds, tx)
+		}(hash, cmds)
 	}
 
+	wg.Wait()
 	return cmdsFirstErr(cmds)
 }
 
-func (c *Ring) TxPipeline() Pipeliner {
-	panic("not implemented")
-}
+func (c *Ring) processShardPipeline(
+	ctx context.Context, hash string, cmds []Cmder, tx bool,
+) error {
+	//TODO: retry?
+	shard, err := c.shards.GetByHash(hash)
+	if err != nil {
+		setCmdsErr(cmds, err)
+		return err
+	}
 
-func (c *Ring) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	panic("not implemented")
+	if tx {
+		err = shard.Client.processTxPipeline(ctx, cmds)
+	} else {
+		err = shard.Client.processPipeline(ctx, cmds)
+	}
+	return err
 }
 
 // Close closes the ring client, releasing any open resources.
@@ -653,6 +688,39 @@ func (c *Ring) Close() error {
 	return c.shards.Close()
 }
 
+func (c *Ring) Watch(fn func(*Tx) error, keys ...string) error {
+	if len(keys) == 0 {
+		return fmt.Errorf("redis: Watch requires at least one key")
+	}
+
+	var shards []*ringShard
+	for _, key := range keys {
+		if key != "" {
+			shard, err := c.shards.GetByKey(hashtag.Key(key))
+			if err != nil {
+				return err
+			}
+
+			shards = append(shards, shard)
+		}
+	}
+
+	if len(shards) == 0 {
+		return fmt.Errorf("redis: Watch requires at least one shard")
+	}
+
+	if len(shards) > 1 {
+		for _, shard := range shards[1:] {
+			if shard.Client != shards[0].Client {
+				err := fmt.Errorf("redis: Watch requires all keys to be in the same shard")
+				return err
+			}
+		}
+	}
+
+	return shards[0].Client.Watch(fn, keys...)
+}
+
 func newConsistentHash(opt *RingOptions) *consistenthash.Map {
 	return consistenthash.New(opt.HashReplicas, consistenthash.Hash(opt.Hash))
 }
diff --git a/vendor/github.com/go-redis/redis/script.go b/vendor/github.com/go-redis/redis/v7/script.go
index 09f36d9320..88b7d0a2ea 100644
--- a/vendor/github.com/go-redis/redis/script.go
+++ b/vendor/github.com/go-redis/redis/v7/script.go
@@ -24,7 +24,7 @@ type Script struct {
 
 func NewScript(src string) *Script {
 	h := sha1.New()
-	io.WriteString(h, src)
+	_, _ = io.WriteString(h, src)
 	return &Script{
 		src:  src,
 		hash: hex.EncodeToString(h.Sum(nil)),
diff --git a/vendor/github.com/go-redis/redis/sentinel.go b/vendor/github.com/go-redis/redis/v7/sentinel.go
index 7cbb90bdb4..8aa40ef799 100644
--- a/vendor/github.com/go-redis/redis/sentinel.go
+++ b/vendor/github.com/go-redis/redis/v7/sentinel.go
@@ -1,6 +1,7 @@
 package redis
 
 import (
+	"context"
 	"crypto/tls"
 	"errors"
 	"net"
@@ -8,8 +9,8 @@ import (
 	"sync"
 	"time"
 
-	"github.com/go-redis/redis/internal"
-	"github.com/go-redis/redis/internal/pool"
+	"github.com/go-redis/redis/v7/internal"
+	"github.com/go-redis/redis/v7/internal/pool"
 )
 
 //------------------------------------------------------------------------------
@@ -20,12 +21,16 @@ type FailoverOptions struct {
 	// The master name.
 	MasterName string
 	// A seed list of host:port addresses of sentinel nodes.
-	SentinelAddrs []string
+	SentinelAddrs    []string
+	SentinelUsername string
+	SentinelPassword string
 
 	// Following options are copied from Options struct.
 
+	Dialer    func(ctx context.Context, network, addr string) (net.Conn, error)
 	OnConnect func(*Conn) error
 
+	Username string
 	Password string
 	DB       int
 
@@ -49,14 +54,17 @@ type FailoverOptions struct {
 
 func (opt *FailoverOptions) options() *Options {
 	return &Options{
-		Addr: "FailoverClient",
-
+		Addr:      "FailoverClient",
+		Dialer:    opt.Dialer,
 		OnConnect: opt.OnConnect,
 
 		DB:       opt.DB,
+		Username: opt.Username,
 		Password: opt.Password,
 
-		MaxRetries: opt.MaxRetries,
+		MaxRetries:      opt.MaxRetries,
+		MinRetryBackoff: opt.MinRetryBackoff,
+		MaxRetryBackoff: opt.MaxRetryBackoff,
 
 		DialTimeout:  opt.DialTimeout,
 		ReadTimeout:  opt.ReadTimeout,
@@ -66,6 +74,8 @@ func (opt *FailoverOptions) options() *Options {
 		PoolTimeout:        opt.PoolTimeout,
 		IdleTimeout:        opt.IdleTimeout,
 		IdleCheckFrequency: opt.IdleCheckFrequency,
+		MinIdleConns:       opt.MinIdleConns,
+		MaxConnAge:         opt.MaxConnAge,
 
 		TLSConfig: opt.TLSConfig,
 	}
@@ -81,22 +91,18 @@ func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
 	failover := &sentinelFailover{
 		masterName:    failoverOpt.MasterName,
 		sentinelAddrs: failoverOpt.SentinelAddrs,
+		username:      failoverOpt.SentinelUsername,
+		password:      failoverOpt.SentinelPassword,
 
 		opt: opt,
 	}
 
 	c := Client{
-		baseClient: baseClient{
-			opt:      opt,
-			connPool: failover.Pool(),
-
-			onClose: func() error {
-				return failover.Close()
-			},
-		},
+		baseClient: newBaseClient(opt, failover.Pool()),
+		ctx:        context.Background(),
 	}
-	c.baseClient.init()
-	c.cmdable.setProcessor(c.Process)
+	c.cmdable = c.Process
+	c.onClose = failover.Close
 
 	return &c
 }
@@ -104,27 +110,49 @@ func NewFailoverClient(failoverOpt *FailoverOptions) *Client {
 //------------------------------------------------------------------------------
 
 type SentinelClient struct {
-	baseClient
+	*baseClient
+	ctx context.Context
 }
 
 func NewSentinelClient(opt *Options) *SentinelClient {
 	opt.init()
 	c := &SentinelClient{
-		baseClient: baseClient{
+		baseClient: &baseClient{
 			opt:      opt,
 			connPool: newConnPool(opt),
 		},
+		ctx: context.Background(),
 	}
-	c.baseClient.init()
 	return c
 }
 
+func (c *SentinelClient) Context() context.Context {
+	return c.ctx
+}
+
+func (c *SentinelClient) WithContext(ctx context.Context) *SentinelClient {
+	if ctx == nil {
+		panic("nil context")
+	}
+	clone := *c
+	clone.ctx = ctx
+	return &clone
+}
+
+func (c *SentinelClient) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
+}
+
+func (c *SentinelClient) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.baseClient.process(ctx, cmd)
+}
+
 func (c *SentinelClient) pubSub() *PubSub {
 	pubsub := &PubSub{
 		opt: c.opt,
 
 		newConn: func(channels []string) (*pool.Conn, error) {
-			return c.newConn()
+			return c.newConn(context.TODO())
 		},
 		closeConn: c.connPool.CloseConn,
 	}
@@ -132,6 +160,14 @@ func (c *SentinelClient) pubSub() *PubSub {
 	return pubsub
 }
 
+// Ping is used to test if a connection is still alive, or to
+// measure latency.
+func (c *SentinelClient) Ping() *StringCmd {
+	cmd := NewStringCmd("ping")
+	_ = c.Process(cmd)
+	return cmd
+}
+
 // Subscribe subscribes the client to the specified channels.
 // Channels can be omitted to create empty subscription.
 func (c *SentinelClient) Subscribe(channels ...string) *PubSub {
@@ -154,13 +190,13 @@ func (c *SentinelClient) PSubscribe(channels ...string) *PubSub {
 
 func (c *SentinelClient) GetMasterAddrByName(name string) *StringSliceCmd {
 	cmd := NewStringSliceCmd("sentinel", "get-master-addr-by-name", name)
-	c.Process(cmd)
+	_ = c.Process(cmd)
 	return cmd
 }
 
 func (c *SentinelClient) Sentinels(name string) *SliceCmd {
 	cmd := NewSliceCmd("sentinel", "sentinels", name)
-	c.Process(cmd)
+	_ = c.Process(cmd)
 	return cmd
 }
 
@@ -168,7 +204,7 @@ func (c *SentinelClient) Sentinels(name string) *SliceCmd {
 // asking for agreement to other Sentinels.
 func (c *SentinelClient) Failover(name string) *StatusCmd {
 	cmd := NewStatusCmd("sentinel", "failover", name)
-	c.Process(cmd)
+	_ = c.Process(cmd)
 	return cmd
 }
 
@@ -178,14 +214,79 @@ func (c *SentinelClient) Failover(name string) *StatusCmd {
 // already discovered and associated with the master.
 func (c *SentinelClient) Reset(pattern string) *IntCmd {
 	cmd := NewIntCmd("sentinel", "reset", pattern)
-	c.Process(cmd)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// FlushConfig forces Sentinel to rewrite its configuration on disk, including
+// the current Sentinel state.
+func (c *SentinelClient) FlushConfig() *StatusCmd {
+	cmd := NewStatusCmd("sentinel", "flushconfig")
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Master shows the state and info of the specified master.
+func (c *SentinelClient) Master(name string) *StringStringMapCmd {
+	cmd := NewStringStringMapCmd("sentinel", "master", name)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Masters shows a list of monitored masters and their state.
+func (c *SentinelClient) Masters() *SliceCmd {
+	cmd := NewSliceCmd("sentinel", "masters")
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Slaves shows a list of slaves for the specified master and their state.
+func (c *SentinelClient) Slaves(name string) *SliceCmd {
+	cmd := NewSliceCmd("sentinel", "slaves", name)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// CkQuorum checks if the current Sentinel configuration is able to reach the
+// quorum needed to failover a master, and the majority needed to authorize the
+// failover. This command should be used in monitoring systems to check if a
+// Sentinel deployment is ok.
+func (c *SentinelClient) CkQuorum(name string) *StringCmd {
+	cmd := NewStringCmd("sentinel", "ckquorum", name)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Monitor tells the Sentinel to start monitoring a new master with the specified
+// name, ip, port, and quorum.
+func (c *SentinelClient) Monitor(name, ip, port, quorum string) *StringCmd {
+	cmd := NewStringCmd("sentinel", "monitor", name, ip, port, quorum)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Set is used in order to change configuration parameters of a specific master.
+func (c *SentinelClient) Set(name, option, value string) *StringCmd {
+	cmd := NewStringCmd("sentinel", "set", name, option, value)
+	_ = c.Process(cmd)
+	return cmd
+}
+
+// Remove is used in order to remove the specified master: the master will no
+// longer be monitored, and will totally be removed from the internal state of
+// the Sentinel.
+func (c *SentinelClient) Remove(name string) *StringCmd {
+	cmd := NewStringCmd("sentinel", "remove", name)
+	_ = c.Process(cmd)
 	return cmd
 }
 
 type sentinelFailover struct {
 	sentinelAddrs []string
 
-	opt *Options
+	opt      *Options
+	username string
+	password string
 
 	pool     *pool.ConnPool
 	poolOnce sync.Once
@@ -206,19 +307,36 @@ func (c *sentinelFailover) Close() error {
 	return nil
 }
 
+func (c *sentinelFailover) closeSentinel() error {
+	firstErr := c.pubsub.Close()
+	c.pubsub = nil
+
+	err := c.sentinel.Close()
+	if err != nil && firstErr == nil {
+		firstErr = err
+	}
+	c.sentinel = nil
+
+	return firstErr
+}
+
 func (c *sentinelFailover) Pool() *pool.ConnPool {
 	c.poolOnce.Do(func() {
-		c.opt.Dialer = c.dial
-		c.pool = newConnPool(c.opt)
+		opt := *c.opt
+		opt.Dialer = c.dial
+		c.pool = newConnPool(&opt)
 	})
 	return c.pool
 }
 
-func (c *sentinelFailover) dial() (net.Conn, error) {
+func (c *sentinelFailover) dial(ctx context.Context, network, _ string) (net.Conn, error) {
 	addr, err := c.MasterAddr()
 	if err != nil {
 		return nil, err
 	}
+	if c.opt.Dialer != nil {
+		return c.opt.Dialer(ctx, network, addr)
+	}
 	return net.DialTimeout("tcp", addr, c.opt.DialTimeout)
 }
 
@@ -232,17 +350,35 @@ func (c *sentinelFailover) MasterAddr() (string, error) {
 }
 
 func (c *sentinelFailover) masterAddr() (string, error) {
-	addr := c.getMasterAddr()
-	if addr != "" {
-		return addr, nil
+	c.mu.RLock()
+	sentinel := c.sentinel
+	c.mu.RUnlock()
+
+	if sentinel != nil {
+		addr := c.getMasterAddr(sentinel)
+		if addr != "" {
+			return addr, nil
+		}
 	}
 
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
+	if c.sentinel != nil {
+		addr := c.getMasterAddr(c.sentinel)
+		if addr != "" {
+			return addr, nil
+		}
+		_ = c.closeSentinel()
+	}
+
 	for i, sentinelAddr := range c.sentinelAddrs {
 		sentinel := NewSentinelClient(&Options{
-			Addr: sentinelAddr,
+			Addr:   sentinelAddr,
+			Dialer: c.opt.Dialer,
+
+			Username: c.username,
+			Password: c.password,
 
 			MaxRetries: c.opt.MaxRetries,
 
@@ -260,7 +396,7 @@ func (c *sentinelFailover) masterAddr() (string, error) {
 
 		masterAddr, err := sentinel.GetMasterAddrByName(c.masterName).Result()
 		if err != nil {
-			internal.Logf("sentinel: GetMasterAddrByName master=%q failed: %s",
+			internal.Logger.Printf("sentinel: GetMasterAddrByName master=%q failed: %s",
 				c.masterName, err)
 			_ = sentinel.Close()
 			continue
@@ -277,27 +413,13 @@ func (c *sentinelFailover) masterAddr() (string, error) {
 	return "", errors.New("redis: all sentinels are unreachable")
 }
 
-func (c *sentinelFailover) getMasterAddr() string {
-	c.mu.RLock()
-	sentinel := c.sentinel
-	c.mu.RUnlock()
-
-	if sentinel == nil {
-		return ""
-	}
-
+func (c *sentinelFailover) getMasterAddr(sentinel *SentinelClient) string {
 	addr, err := sentinel.GetMasterAddrByName(c.masterName).Result()
 	if err != nil {
-		internal.Logf("sentinel: GetMasterAddrByName name=%q failed: %s",
+		internal.Logger.Printf("sentinel: GetMasterAddrByName name=%q failed: %s",
 			c.masterName, err)
-		c.mu.Lock()
-		if c.sentinel == sentinel {
-			c.closeSentinel()
-		}
-		c.mu.Unlock()
 		return ""
 	}
-
 	return net.JoinHostPort(addr[0], addr[1])
 }
 
@@ -312,7 +434,11 @@ func (c *sentinelFailover) switchMaster(addr string) {
 	c.mu.Lock()
 	defer c.mu.Unlock()
 
-	internal.Logf("sentinel: new master=%q addr=%q",
+	if c._masterAddr == addr {
+		return
+	}
+
+	internal.Logger.Printf("sentinel: new master=%q addr=%q",
 		c.masterName, addr)
 	_ = c.Pool().Filter(func(cn *pool.Conn) bool {
 		return cn.RemoteAddr().String() != addr
@@ -321,35 +447,20 @@ func (c *sentinelFailover) switchMaster(addr string) {
 }
 
 func (c *sentinelFailover) setSentinel(sentinel *SentinelClient) {
-	c.discoverSentinels(sentinel)
+	if c.sentinel != nil {
+		panic("not reached")
+	}
 	c.sentinel = sentinel
+	c.discoverSentinels()
 
 	c.pubsub = sentinel.Subscribe("+switch-master")
 	go c.listen(c.pubsub)
 }
 
-func (c *sentinelFailover) closeSentinel() error {
-	var firstErr error
-
-	err := c.pubsub.Close()
-	if err != nil && firstErr == err {
-		firstErr = err
-	}
-	c.pubsub = nil
-
-	err = c.sentinel.Close()
-	if err != nil && firstErr == err {
-		firstErr = err
-	}
-	c.sentinel = nil
-
-	return firstErr
-}
-
-func (c *sentinelFailover) discoverSentinels(sentinel *SentinelClient) {
-	sentinels, err := sentinel.Sentinels(c.masterName).Result()
+func (c *sentinelFailover) discoverSentinels() {
+	sentinels, err := c.sentinel.Sentinels(c.masterName).Result()
 	if err != nil {
-		internal.Logf("sentinel: Sentinels master=%q failed: %s", c.masterName, err)
+		internal.Logger.Printf("sentinel: Sentinels master=%q failed: %s", c.masterName, err)
 		return
 	}
 	for _, sentinel := range sentinels {
@@ -359,7 +470,7 @@ func (c *sentinelFailover) discoverSentinels(sentinel *SentinelClient) {
 			if key == "name" {
 				sentinelAddr := vals[i+1].(string)
 				if !contains(c.sentinelAddrs, sentinelAddr) {
-					internal.Logf("sentinel: discovered new sentinel=%q for master=%q",
+					internal.Logger.Printf("sentinel: discovered new sentinel=%q for master=%q",
 						sentinelAddr, c.masterName)
 					c.sentinelAddrs = append(c.sentinelAddrs, sentinelAddr)
 				}
@@ -376,11 +487,10 @@ func (c *sentinelFailover) listen(pubsub *PubSub) {
 			break
 		}
 
-		switch msg.Channel {
-		case "+switch-master":
+		if msg.Channel == "+switch-master" {
 			parts := strings.Split(msg.Payload, " ")
 			if parts[0] != c.masterName {
-				internal.Logf("sentinel: ignore addr for master=%q", parts[0])
+				internal.Logger.Printf("sentinel: ignore addr for master=%q", parts[0])
 				continue
 			}
 			addr := net.JoinHostPort(parts[3], parts[4])
diff --git a/vendor/github.com/go-redis/redis/tx.go b/vendor/github.com/go-redis/redis/v7/tx.go
index fb3e633102..9ae159015e 100644
--- a/vendor/github.com/go-redis/redis/tx.go
+++ b/vendor/github.com/go-redis/redis/v7/tx.go
@@ -1,8 +1,10 @@
 package redis
 
 import (
-	"github.com/go-redis/redis/internal/pool"
-	"github.com/go-redis/redis/internal/proto"
+	"context"
+
+	"github.com/go-redis/redis/v7/internal/pool"
+	"github.com/go-redis/redis/v7/internal/proto"
 )
 
 // TxFailedErr transaction redis failed.
@@ -13,28 +15,64 @@ const TxFailedErr = proto.RedisError("redis: transaction failed")
 // by multiple goroutines, because Exec resets list of watched keys.
 // If you don't need WATCH it is better to use Pipeline.
 type Tx struct {
-	statefulCmdable
 	baseClient
+	cmdable
+	statefulCmdable
+	hooks
+	ctx context.Context
 }
 
-func (c *Client) newTx() *Tx {
+func (c *Client) newTx(ctx context.Context) *Tx {
 	tx := Tx{
 		baseClient: baseClient{
 			opt:      c.opt,
 			connPool: pool.NewStickyConnPool(c.connPool.(*pool.ConnPool), true),
 		},
+		hooks: c.hooks.clone(),
+		ctx:   ctx,
 	}
-	tx.baseClient.init()
-	tx.statefulCmdable.setProcessor(tx.Process)
+	tx.init()
 	return &tx
 }
 
+func (c *Tx) init() {
+	c.cmdable = c.Process
+	c.statefulCmdable = c.Process
+}
+
+func (c *Tx) Context() context.Context {
+	return c.ctx
+}
+
+func (c *Tx) WithContext(ctx context.Context) *Tx {
+	if ctx == nil {
+		panic("nil context")
+	}
+	clone := *c
+	clone.init()
+	clone.hooks.lock()
+	clone.ctx = ctx
+	return &clone
+}
+
+func (c *Tx) Process(cmd Cmder) error {
+	return c.ProcessContext(c.ctx, cmd)
+}
+
+func (c *Tx) ProcessContext(ctx context.Context, cmd Cmder) error {
+	return c.hooks.process(ctx, cmd, c.baseClient.process)
+}
+
 // Watch prepares a transaction and marks the keys to be watched
 // for conditional execution if there are any keys.
 //
 // The transaction is automatically closed when fn exits.
 func (c *Client) Watch(fn func(*Tx) error, keys ...string) error {
-	tx := c.newTx()
+	return c.WatchContext(c.ctx, fn, keys...)
+}
+
+func (c *Client) WatchContext(ctx context.Context, fn func(*Tx) error, keys ...string) error {
+	tx := c.newTx(ctx)
 	if len(keys) > 0 {
 		if err := tx.Watch(keys...).Err(); err != nil {
 			_ = tx.Close()
@@ -62,7 +100,7 @@ func (c *Tx) Watch(keys ...string) *StatusCmd {
 		args[1+i] = key
 	}
 	cmd := NewStatusCmd(args...)
-	c.Process(cmd)
+	_ = c.Process(cmd)
 	return cmd
 }
 
@@ -74,20 +112,29 @@ func (c *Tx) Unwatch(keys ...string) *StatusCmd {
 		args[1+i] = key
 	}
 	cmd := NewStatusCmd(args...)
-	c.Process(cmd)
+	_ = c.Process(cmd)
 	return cmd
 }
 
-// Pipeline creates a new pipeline. It is more convenient to use Pipelined.
+// Pipeline creates a pipeline. Usually it is more convenient to use Pipelined.
 func (c *Tx) Pipeline() Pipeliner {
 	pipe := Pipeline{
-		exec: c.processTxPipeline,
+		ctx: c.ctx,
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			return c.hooks.processPipeline(ctx, cmds, c.baseClient.processPipeline)
+		},
 	}
-	pipe.statefulCmdable.setProcessor(pipe.Process)
+	pipe.init()
 	return &pipe
 }
 
-// Pipelined executes commands queued in the fn in a transaction.
+// Pipelined executes commands queued in the fn outside of the transaction.
+// Use TxPipelined if you need transactional behavior.
+func (c *Tx) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
+	return c.Pipeline().Pipelined(fn)
+}
+
+// TxPipelined executes commands queued in the fn in the transaction.
 //
 // When using WATCH, EXEC will execute commands only if the watched keys
 // were not modified, allowing for a check-and-set mechanism.
@@ -95,16 +142,18 @@ func (c *Tx) Pipeline() Pipeliner {
 // Exec always returns list of commands. If transaction fails
 // TxFailedErr is returned. Otherwise Exec returns an error of the first
 // failed command or nil.
-func (c *Tx) Pipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.Pipeline().Pipelined(fn)
-}
-
-// TxPipelined is an alias for Pipelined.
 func (c *Tx) TxPipelined(fn func(Pipeliner) error) ([]Cmder, error) {
-	return c.Pipelined(fn)
+	return c.TxPipeline().Pipelined(fn)
 }
 
-// TxPipeline is an alias for Pipeline.
+// TxPipeline creates a pipeline. Usually it is more convenient to use TxPipelined.
 func (c *Tx) TxPipeline() Pipeliner {
-	return c.Pipeline()
+	pipe := Pipeline{
+		ctx: c.ctx,
+		exec: func(ctx context.Context, cmds []Cmder) error {
+			return c.hooks.processTxPipeline(ctx, cmds, c.baseClient.processTxPipeline)
+		},
+	}
+	pipe.init()
+	return &pipe
 }
diff --git a/vendor/github.com/go-redis/redis/universal.go b/vendor/github.com/go-redis/redis/v7/universal.go
index a607562464..005ca682c5 100644
--- a/vendor/github.com/go-redis/redis/universal.go
+++ b/vendor/github.com/go-redis/redis/v7/universal.go
@@ -1,7 +1,9 @@
 package redis
 
 import (
+	"context"
 	"crypto/tls"
+	"net"
 	"time"
 )
 
@@ -18,7 +20,9 @@ type UniversalOptions struct {
 
 	// Common options.
 
+	Dialer             func(ctx context.Context, network, addr string) (net.Conn, error)
 	OnConnect          func(*Conn) error
+	Username           string
 	Password           string
 	MaxRetries         int
 	MinRetryBackoff    time.Duration
@@ -46,15 +50,18 @@ type UniversalOptions struct {
 	MasterName string
 }
 
-func (o *UniversalOptions) cluster() *ClusterOptions {
+// Cluster returns cluster options created from the universal options.
+func (o *UniversalOptions) Cluster() *ClusterOptions {
 	if len(o.Addrs) == 0 {
 		o.Addrs = []string{"127.0.0.1:6379"}
 	}
 
 	return &ClusterOptions{
 		Addrs:     o.Addrs,
+		Dialer:    o.Dialer,
 		OnConnect: o.OnConnect,
 
+		Username: o.Username,
 		Password: o.Password,
 
 		MaxRedirects:   o.MaxRedirects,
@@ -80,7 +87,8 @@ func (o *UniversalOptions) cluster() *ClusterOptions {
 	}
 }
 
-func (o *UniversalOptions) failover() *FailoverOptions {
+// Failover returns failover options created from the universal options.
+func (o *UniversalOptions) Failover() *FailoverOptions {
 	if len(o.Addrs) == 0 {
 		o.Addrs = []string{"127.0.0.1:26379"}
 	}
@@ -88,9 +96,12 @@ func (o *UniversalOptions) failover() *FailoverOptions {
 	return &FailoverOptions{
 		SentinelAddrs: o.Addrs,
 		MasterName:    o.MasterName,
-		OnConnect:     o.OnConnect,
+
+		Dialer:    o.Dialer,
+		OnConnect: o.OnConnect,
 
 		DB:       o.DB,
+		Username: o.Username,
 		Password: o.Password,
 
 		MaxRetries:      o.MaxRetries,
@@ -112,7 +123,8 @@ func (o *UniversalOptions) failover() *FailoverOptions {
 	}
 }
 
-func (o *UniversalOptions) simple() *Options {
+// Simple returns basic options created from the universal options.
+func (o *UniversalOptions) Simple() *Options {
 	addr := "127.0.0.1:6379"
 	if len(o.Addrs) > 0 {
 		addr = o.Addrs[0]
@@ -120,9 +132,11 @@ func (o *UniversalOptions) simple() *Options {
 
 	return &Options{
 		Addr:      addr,
+		Dialer:    o.Dialer,
 		OnConnect: o.OnConnect,
 
 		DB:       o.DB,
+		Username: o.Username,
 		Password: o.Password,
 
 		MaxRetries:      o.MaxRetries,
@@ -147,14 +161,18 @@ func (o *UniversalOptions) simple() *Options {
 // --------------------------------------------------------------------
 
 // UniversalClient is an abstract client which - based on the provided options -
-// can connect to either clusters, or sentinel-backed failover instances or simple
-// single-instance servers. This can be useful for testing cluster-specific
-// applications locally.
+// can connect to either clusters, or sentinel-backed failover instances
+// or simple single-instance servers. This can be useful for testing
+// cluster-specific applications locally.
 type UniversalClient interface {
 	Cmdable
+	Context() context.Context
+	AddHook(Hook)
 	Watch(fn func(*Tx) error, keys ...string) error
+	Do(args ...interface{}) *Cmd
+	DoContext(ctx context.Context, args ...interface{}) *Cmd
 	Process(cmd Cmder) error
-	WrapProcess(fn func(oldProcess func(cmd Cmder) error) func(cmd Cmder) error)
+	ProcessContext(ctx context.Context, cmd Cmder) error
 	Subscribe(channels ...string) *PubSub
 	PSubscribe(channels ...string) *PubSub
 	Close() error
@@ -162,6 +180,7 @@ type UniversalClient interface {
 
 var _ UniversalClient = (*Client)(nil)
 var _ UniversalClient = (*ClusterClient)(nil)
+var _ UniversalClient = (*Ring)(nil)
 
 // NewUniversalClient returns a new multi client. The type of client returned depends
 // on the following three conditions:
@@ -171,9 +190,9 @@ var _ UniversalClient = (*ClusterClient)(nil)
 // 3. otherwise, a single-node redis Client will be returned.
 func NewUniversalClient(opts *UniversalOptions) UniversalClient {
 	if opts.MasterName != "" {
-		return NewFailoverClient(opts.failover())
+		return NewFailoverClient(opts.Failover())
 	} else if len(opts.Addrs) > 1 {
-		return NewClusterClient(opts.cluster())
+		return NewClusterClient(opts.Cluster())
 	}
-	return NewClient(opts.simple())
+	return NewClient(opts.Simple())
 }
diff --git a/vendor/modules.txt b/vendor/modules.txt
index 23a6d82d96..e4cee3b31f 100644
--- a/vendor/modules.txt
+++ b/vendor/modules.txt
@@ -14,7 +14,6 @@ gitea.com/macaron/binding
 ## explicit
 gitea.com/macaron/cache
 gitea.com/macaron/cache/memcache
-gitea.com/macaron/cache/redis
 # gitea.com/macaron/captcha v0.0.0-20190822015246-daa973478bae
 ## explicit
 gitea.com/macaron/captcha
@@ -44,7 +43,6 @@ gitea.com/macaron/session/memcache
 gitea.com/macaron/session/mysql
 gitea.com/macaron/session/nodb
 gitea.com/macaron/session/postgres
-gitea.com/macaron/session/redis
 # gitea.com/macaron/toolbox v0.0.0-20190822013122-05ff0fc766b7
 ## explicit
 gitea.com/macaron/toolbox
@@ -347,15 +345,15 @@ github.com/go-openapi/strfmt
 github.com/go-openapi/swag
 # github.com/go-openapi/validate v0.19.10
 github.com/go-openapi/validate
-# github.com/go-redis/redis v6.15.2+incompatible
-## explicit
-github.com/go-redis/redis
-github.com/go-redis/redis/internal
-github.com/go-redis/redis/internal/consistenthash
-github.com/go-redis/redis/internal/hashtag
-github.com/go-redis/redis/internal/pool
-github.com/go-redis/redis/internal/proto
-github.com/go-redis/redis/internal/util
+# github.com/go-redis/redis/v7 v7.4.0
+## explicit
+github.com/go-redis/redis/v7
+github.com/go-redis/redis/v7/internal
+github.com/go-redis/redis/v7/internal/consistenthash
+github.com/go-redis/redis/v7/internal/hashtag
+github.com/go-redis/redis/v7/internal/pool
+github.com/go-redis/redis/v7/internal/proto
+github.com/go-redis/redis/v7/internal/util
 # github.com/go-sql-driver/mysql v1.5.0
 ## explicit
 github.com/go-sql-driver/mysql
@@ -692,6 +690,7 @@ github.com/stretchr/testify/require
 # github.com/subosito/gotenv v1.2.0
 github.com/subosito/gotenv
 # github.com/syndtr/goleveldb v1.0.0
+## explicit
 github.com/syndtr/goleveldb/leveldb
 github.com/syndtr/goleveldb/leveldb/cache
 github.com/syndtr/goleveldb/leveldb/comparer