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Redis replication dcshi
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dcshi
Redis 是一个开源的高级键值存储系统,支持多种数据类型。文档讨论了 Redis 的复制机制及其优缺点,并提供了一些优化策略来处理从节点的短暂断开。还介绍了如何在断开重连时识别同一从节点。
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Redis replication dcshi
1.
施俊伟
dcshi http://weibo.com/dcshi http://twitter.com/dcshi http://dcshi.com
2.
What is redis Redis
is an open source, advanced key-value store. keys can contain strings, hashes, lists,sets ,sorted sets. http://redis.io http://groups.google.com/group/redis-db
3.
What is in
redis
4.
Replication
5.
Advantage vs disadvantage Advantage:
simple->kiss Disadvantage: full resync master负载大 http://groups.google.com/group/redis- db/browse_thread/thread/6badf6abf8f44eb0
6.
优化? 1.定期dump rdb,并记录当前AOF偏移(AOF文件按文件 大小进行自动分割滚动).slave发送sync命令时,需要把 rdb文件和指定aof文件偏移后的增量数据发送给slave即 可. 2.优化slave短暂断开的情况,master不会马上释放该 slave连接.等待一段时间,并缓存该期间内的写,如果 此slave再次发送sync同步命令,则可以满足增量同步 Q:断开重连是一个新的tcp连接,master怎么知道是同 一个slave?
7.
QA
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