Add commit count caching (#2774)

* Add commit count caching

* Small refactoring

* Add different key prefix for refs and commits

* Add configuratuion option to allow to change caching time or disable it

1 files changed, 22 insertions, 10 deletions

diff --git a/modules/setting/setting.go b/modules/setting/setting.go
index 9787e09280..6c89381f3b 100644
--- a/modules/setting/setting.go
+++ b/modules/setting/setting.go
@@ -325,11 +325,6 @@ var (
 	// Time settings
 	TimeFormat string
 
-	// Cache settings
-	CacheAdapter  string
-	CacheInterval int
-	CacheConn     string
-
 	// Session settings
 	SessionConfig  session.Options
 	CSRFCookieName = "_csrf"
@@ -1295,16 +1290,33 @@ func NewXORMLogService(disableConsole bool) {
 	}
 }
 
+// Cache represents cache settings
+type Cache struct {
+	Adapter  string
+	Interval int
+	Conn     string
+	TTL      time.Duration
+}
+
+var (
+	// CacheService the global cache
+	CacheService *Cache
+)
+
 func newCacheService() {
-	CacheAdapter = Cfg.Section("cache").Key("ADAPTER").In("memory", []string{"memory", "redis", "memcache"})
-	switch CacheAdapter {
+	sec := Cfg.Section("cache")
+	CacheService = &Cache{
+		Adapter: sec.Key("ADAPTER").In("memory", []string{"memory", "redis", "memcache"}),
+	}
+	switch CacheService.Adapter {
 	case "memory":
-		CacheInterval = Cfg.Section("cache").Key("INTERVAL").MustInt(60)
+		CacheService.Interval = sec.Key("INTERVAL").MustInt(60)
 	case "redis", "memcache":
-		CacheConn = strings.Trim(Cfg.Section("cache").Key("HOST").String(), "\" ")
+		CacheService.Conn = strings.Trim(sec.Key("HOST").String(), "\" ")
 	default:
-		log.Fatal(4, "Unknown cache adapter: %s", CacheAdapter)
+		log.Fatal(4, "Unknown cache adapter: %s", CacheService.Adapter)
 	}
+	CacheService.TTL = sec.Key("ITEM_TTL").MustDuration(16 * time.Hour)
 
 	log.Info("Cache Service Enabled")
 }