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Hello, I'm Kilvn 👋

🇨🇳 Shenzhen,China・🕹Web developer

Personal Home Page: https://www.kilvn.com

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Mysql索引优化_东子博客

https://blog.kilvn.com/post/mysql_index_optimization/

无需一开始就创建索引,可以等到业务场景明确后,或者是数据量超过 1 万、查询变慢后,再针对需要查询、排序或分组的字段创建索引。我们可以把所有的请求记录到 general log 里面,或者我们把 long_query_time 设置为 0 把所有的 sql 都当成慢查询 sql,记录所有的 sql,然后在针对这些慢查询 sql 进行分析,看看哪些 sql 出现的频率最高,或者是哪些 sql 的执行耗时更高,然后我们针对这些 sql,再进行有针对性的去创建合适的索引。

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