PHP的垃圾回收机制详解

    http://www.phpmianshiti.com/tiku/155/

    PHP垃圾回收周期(Collecting Cycles)

    https://www.php.net/manual/zh/features.gc.collecting-cycles.php

    PHP生命周期

    https://www.daixiaorui.com/read/274.html

    聚簇索引、非聚簇索引、回表

    https://www.cnblogs.com/HHR-SUN/p/12165173.html

    Redis缓存穿透，缓存雪崩，缓存击穿

    https://segmentfault.com/a/1190000020155561

    Redis五种数据类型及应用场景

    https://segmentfault.com/a/1190000020155561

    详解Redis中两种持久化机制RDB和AOF

    https://baijiahao.baidu.com/s?id=1654694618189745916&wfr=spider&for=pc

    Redis如何做持久化

    https://www.jianshu.com/p/9f4a3915df71