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docs/database/redis/redis-questions-01.md
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@ -729,7 +729,7 @@ Redis 的定期删除过程是随机的（周期性地随机从设置了过期
Redis 7.2 版本的执行时间阈值是 **25ms**，过期 key 比例设定值是 **10%**。
```java
```c
#define ACTIVE_EXPIRE_CYCLE_FAST_DURATION 1000 /* Microseconds. */
#define ACTIVE_EXPIRE_CYCLE_SLOW_TIME_PERC 25 /* Max % of CPU to use. */
#define ACTIVE_EXPIRE_CYCLE_ACCEPTABLE_STALE 10 /* % of stale keys after which