<?xml version="1.0" encoding="utf-8" ?><rss version="2.0"><channel><title><![CDATA[Gxueya的博客]]></title><description><![CDATA[]]></description><link>https://blog.youkuaiyun.com/Gxueya</link><language>zh-cn</language><generator>https://blog.youkuaiyun.com/</generator><copyright><![CDATA[Copyright &copy; Gxueya]]></copyright><item><title><![CDATA[一天速通Redis]]></title><link>https://blog.youkuaiyun.com/Gxueya/article/details/158508815</link><guid>https://blog.youkuaiyun.com/Gxueya/article/details/158508815</guid><author>Gxueya</author><pubDate>Sat, 28 Feb 2026 21:30:32 +0800</pubDate><description><![CDATA[解决方案类1：给每个ket添加一个随机偏移量 2.分批次设置过期时间 解决方案类2：1.搭建redis高可用集群 2.添加缓存降级/限流机制：缓存降级（返沪兜底数据“服务繁忙。客户端发送请求，对应的key在redis缓存和后端数据库中均不存在，导致该请求无法被缓存拦截，全部穿透缓存层，直接打在数据库上。2.AOF：将Redis执行过的所有指令存储起来，下次启动Redis时，重新执行一遍这些指令。访问量极高的热点key，在Redis缓存中恰好过期的瞬间，涌入大量的该KEY的请求。python操作Redis。]]></description><category></category></item><item><title><![CDATA[MySql（索引）]]></title><link>https://blog.youkuaiyun.com/Gxueya/article/details/158469530</link><guid>https://blog.youkuaiyun.com/Gxueya/article/details/158469530</guid><author>Gxueya</author><pubDate>Sat, 28 Feb 2026 18:20:12 +0800</pubDate><description><![CDATA[【代码】MySql（索引）]]></description><category></category></item><item><title><![CDATA[MySql（外键约束）]]></title><link>https://blog.youkuaiyun.com/Gxueya/article/details/158469509</link><guid>https://blog.youkuaiyun.com/Gxueya/article/details/158469509</guid><author>Gxueya</author><pubDate>Fri, 27 Feb 2026 19:37:28 +0800</pubDate><description><![CDATA[【代码】MySql（外键约束）]]></description><category></category></item><item><title><![CDATA[MySql（内连接 外连接 子查询）]]></title><link>https://blog.youkuaiyun.com/Gxueya/article/details/158469139</link><guid>https://blog.youkuaiyun.com/Gxueya/article/details/158469139</guid><author>Gxueya</author><pubDate>Fri, 27 Feb 2026 19:34:42 +0800</pubDate><description><![CDATA[【代码】MySql（内连接 外连接 子查询）]]></description><category></category></item></channel></rss>