rediscript

redis-lua-scripts

A curated library of Redis Lua scripts

Namespace

• The first number of the lua script filename indicates the number of KEYS. Example: 2_HSETXP.lua takes 2 keys.

Examples

HASHES_XP

Group HASHES_XP is Hashes with EXPIREAT by each field. Although you can set EXPIRE to HASHES, hash set will expire by key so that you’ll discard all fields associated with the key as well. To avoid that, HASHES_XP creates two hash sets, one of those is normal hash set containing the key and fields, the other one hash set has time of the field expire at, whose key of the hash set is “.EXPIREAT”.

// To load lua script, execute GetScript
script, err := GetScript("HASHES_XP/2_HSETXP")

// HSETXP key expire(secs) field value
_, err := redis.Bool(script.Do(conn, "key", "10", "field", "value"))

// check it works! b is true
b, err := redis.Bool(conn.Do("HEXISTS", "key", "field"))

SORTED_SETS_XP

Group SORTED_SETS_XP is SortedSets with EXPIREAT by each member. SORTED_SETS_XP creates two sorted sets as well, one of those is normal sorted set containing the key and fields, the other one sorted set has time of the field expire at, whose key of the hash set is “.EXPIREAT”.

// To load lua script, execute GetScript
script, err := GetScript("SORTED_SETS_XP/2_ZADDXP")

// ZADDXP key expire(secs) field value
_, err := redis.Bool(script.Do(conn, "key", "10", "1.3", "member"))

// check it works! f is 1.3
f, err := redis.Float64(conn.Do("ZSCORE", "key", "member"))

GetAllScripts

func GetAllScripts enables loading all scripts of the group specified.

scripts, err := GetAllScripts("SORTED_SETS_XP")