redis内存数据库的相关内容

文章 2022-11-13 来自：开发者社区

Redis连环炮：内存淘汰？事务？分布式锁？分步式限流？异步队列？延时队列？高可用？如何部署？哈希槽？数据库和缓存的数据一致性？

1.Redis 删除过期键的策略（缓存失效策略、数据过期策略）**定时删除：**在设置键的过期时间的同时，创建一个定时器，让定时器在键的过期时间来临时，立即执行对键的删除操作。对内存最友好，对 CPU 时间最不友好。**惰性删除：**放任键过期不管，但是每次获取键时，都检査键是否过期，如果过期的话，就删除该键；如果没有过期，就返回该键。对 CPU 时间最优化，对内存最不友好。**定期删除：**每....

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更新时间 2024-08-29 10:05:38

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