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redis master-slave #7

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ping-chang-xin opened this issue Dec 12, 2021 · 0 comments

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ping-chang-xin commented Dec 12, 2021 •

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redis master-slave

redis主从连接过程时序图

主从建立连接过程可以理解为使用状态机驱动
redisServer struct中有个属性repl_state
客户端发送replicaof命令，redis处理该命令，设置repl_state = REPL_STATE_CONNECT，开启状态转换
redis使用定时器事件，根据repl_state不同状态做不同操作，最终完成主备连接，发送PSYNC命令

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