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清空mysql 查询缓存的可行方法_MySQL

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Release： 2016-06-01 13:05:26
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对一条sql进行优化时，发现原本很慢的一条sql（将近1分钟） 在第二次运行时， 瞬间就完成了（0.00sec）

这是因为mysql对同一条sql进行了缓存，服务器直接从上次的查询结果缓存中读取数据，而不是重新分析、执行sql。

可通过如下方法清空查询缓存

reset query cache;

Related labels：
mysql Query cache
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