[转]排它锁&共享锁&乐观锁&悲观锁

1.排它锁 客户端1php set autocommit=0; BEGIN; SELECT * from bb_blog where id = 1 for update; update bb_blog set title = 5525 where id = 1; //这里没有提交事务 commit，由于提交以后就是解锁了 客户端1mysql SELECT * from bb_blog where

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