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ACID事务理论
2022-07-05 11:29:00 【InfoQ】
什么是ACID
- Atomicity(原子性):事务是一个不可分割的整体,事务内所有操作要么全做成功,要么全失败。
- Consistency(一致性):务执行前后,数据从一个状态到另一个状态必须是一致的(A向B转账,不能出现A扣了钱,B却没收到)。
- Isolation(隔离性): 多个并发事务之间相互隔离,不能互相干扰。
- Durability(持久性):事务完成后,对数据库的更改是永久保存的,不能回滚。
ACID靠什么保证的呢?
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