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mysql中的mvcc，如何理解与应用？谢谢

WBOY
Release： 2016-06-06 20:16:11
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如题.
谢谢

回复内容：

如题.
谢谢

mvcc：多版本并发控制

说白了就是对每条记录保存多个时刻的副本，当多个事务同时读同一条数据的时候，根据事务开始的时刻，读取不同的快照数据，从而达到事务的可重复读隔离级别。

使用mysql innodb引擎，默认就是使用了mvcc的可重复读事务级别

Related labels：
linux mysql php
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