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MySQL 内核革新:智能拦截全表扫描,百度智能云守护数据库性能与安全
在日常数据库运维中,“扫表风暴”数次悄然而至 —— 某条未走索引的 SQL 突然执行全表扫描,短短几分钟内吃光 IO、拖高 CPU,最终引发集群抖动甚至服务不可用。这样的事故,你是否也曾经历过? 全表扫描(Full Table Scan)是数据库查询中常见的性能杀手 ...
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