redis key过期时间的监听

最新推荐文章于 2025-02-27 11:55:22 发布

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最新推荐文章于 2025-02-27 11:55:22 发布

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分类专栏： C#基本语法笔记文章标签： redis key过期

本文链接：https://blog.youkuaiyun.com/qq_15555767/article/details/79442125

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本文介绍了如何配置Redis以监听key的过期事件，并通过发布订阅机制接收通知。首先，修改Redis配置文件启用键空间通知，关注'Ex'事件（过期事件）。然后，重启Redis服务。最后，使用StackExchange.Redis库创建订阅者，监听并打印过期key的信息。

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第一步修改配置文件

############################# EVENT NOTIFICATION ##############################

# Redis can notify Pub/Sub clients about events happening in the key space.
# This feature is documented at http://redis.io/topics/notifications
#
# For instance if keyspace events notification is enabled, and a client
# performs a DEL operation on key "foo" stored in the Database 0, two
# messages will be published via Pub/Sub:
#
# PUBLISH __keyspace@0__:foo del
# PUBLISH __keyevent@0__:del foo
#
# It is possible to select the events that Redis will notify among a set
# of classes. Every class is identified by a single character:
#
# K Keyspace events, published with __keyspace@<db>__ prefix.
# E Keyevent events, published with __keyevent@<db>__ prefix.
# g Generic commands (non-type specific) like DEL, EXPIRE, RENAME, ...
# $ String c

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