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51CTO
10 小时
千万级的大表如何新增字段?
gh-ost(GitHub's Online Schema Transmogrifier)是GitHub开源的一种无触发器的MySQL在线表结构变更方案。专为解决大表DDL(如新增字段、索引变更、表引擎转换)时锁表阻塞、主库负载高等问题而设计。 前言 线上千万级的大表在新增字段的时候,一定要小心,我见过太多 ...
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