Redis Batch wraps a node_redis instance, and batches write commands like hincrby, incrby and sadd to Redis. For systems generating lots of writes to Redis, this can be a significant performance increase for Redis and for the machines issuing the write commands.
When we deployed redis-batch within Segment's server cluster:
- Redis ops/second dropped by a factor of 4
- Servers issuing commands CPU dropped by 50%
Redis-batch only supports "write" commands that make sense to be batched. Of the 150+ Redis commands, redis-batch is only intended to support 34. Currently it supports 12. Not all of them are supported yet, feel free to pull request!
- decr, decrby
- incr, incrby
- hincr, hincrby
- set, mset
- hset, hmset
- pexpire, expire
- pexpireat, expireat
var RedisBatch = ;var redisBatch = redis; // redis instance created elsewherevar redisBatch = redis flushAfter: 3000 ;/*** hincrby batches by key:field* This will become a single "hincrby warehouse pants -6" when sent to redis.*/redisBatch;/*** incrby batches by key* This will become a single "incrby projectcounter 22" when sent to redis.*/redisBatch;/*** pexpire de-duplicates by key* This will become a single "pexpire key 1000" when sent to redis.*/redisBatch;/*** sadd batches by key* This will become a single "sadd key member1 member2 member3" when sent to redis.*/redisBatch;
You can intermingle sadd, incrby and hincrby as you desire.
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