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redis 命名空间通知机制

Published at April 8, 2020 ·  1 min read

命名空间通知 ( Keyspace notifications ),可以让客户端订阅 Pub/Sub 获得下述通知: 所有影响到特定 Key 的命令 所有接受到 LPUSH 命令的 key 所有在 database 0 过期的 key 基于第三条,可以利用此特性,通过 Redis + expire key 构建一个延时通知的服务。但是,基于此构建的通知服务并不能保证可靠,当 Pub/Sub 客户端断开链接并重连后,期间所有的事件将会消失。 https://redis.io/topics/notifications...


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