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redis淘汰策列
2022-07-25 15:10:00 【一个风轻云淡】
将Redis用作缓存时,如果内存空间用满,就会自动驱逐老的数据。
Redis六种淘汰策略
noeviction:当内存使用达到阈值的时候,所有引起申请内存的命令会报错。
allkeys-lru:在主键空间中,优先移除最近未使用的key。(推荐)
volatile-lru:在设置了过期时间的键空间中,优先移除最近未使用的key。
allkeys-random:在主键空间中,随机移除某个key。
volatile-random:在设置了过期时间的键空间中,随机移除某个key。
volatile-ttl:在设置了过期时间的键空间中,具有更早过期时间的key优先移除
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