diff options
Diffstat (limited to 'lualib/redis_scripts/bayes_cache_check.lua')
| -rw-r--r-- | lualib/redis_scripts/bayes_cache_check.lua | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/lualib/redis_scripts/bayes_cache_check.lua b/lualib/redis_scripts/bayes_cache_check.lua index e69de29bb..3bea57d5f 100644 --- a/lualib/redis_scripts/bayes_cache_check.lua +++ b/lualib/redis_scripts/bayes_cache_check.lua @@ -0,0 +1,20 @@ +-- Lua script to perform cache checking for bayes classification +-- This script accepts the following parameters: +-- key1 - cache id +-- key2 - configuration table in message pack + +local cache_id = KEYS[1] +local conf = cmsgpack.unpack(KEYS[2]) +cache_id = string.sub(cache_id, 1, conf.cache_prefix_len) + +-- Try each prefix that is in Redis +for i = 0, conf.cache_max_keys do + local prefix = conf.cache_prefix .. string.rep("X", i) + local have = redis.call('HGET', prefix, cache_id) + + if have then + return tonumber(have) + end +end + +return nil |