Redis 坑

1. Redis @ http://weibo.com/tangﬂ

2. Redis • disk backed in-memory database • support • k-v • hash • list • set (sorted set) • rdb/aof , master - slave

3. • int k-v 104 byte • • rediscounter • hash • hash-max-zipmap-size

4. • • rehash • get set • redis 48g 4 8g 2 18g 34g 8 13 08:27 iPhone • •

5. • • rehash • write aof • • • aof

6. • master -> slave • master dump rdb, and send to slave • master send every cmd to slave • • • • pos eRedis

7. • rdb • dump all data to disk • fork • •

8. • aof • append every write cmd to aof • long recover time • must bgrewrite from time to time • bgrewrite •

9. • • eRedis • rdb + aof with postion • write • write 2.4 rc8

10. • Java • server • jedis vs jredis • pool lifo=false block time etc • pool • HA

11. pipeline •

12. hgetAll • • mc cache

13. Thanks @ http://weibo.com/tangﬂ

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