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一个事务具有ACID特性，也就是（Atomicity、Consistency、Isolation、Durability，即原子性、一致性、隔离性、持久性），本文主要讲解一下其中的Isolation，也就是事务的隔离性。
spring存在五种隔离级别：这五种隔离级别通常是来源于MySQL的事务的隔离级别，可以相应的解决事务提交过程中的，数据安全的问题，比如读未提交，不可重复读取，脏读，幻读的问题，其中脏读（读未提交）；
促进软件开发及相关领域知识与创新的传播
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"article_summary": "最近在开发需求的时候，用到了select...for update。在代码评审的时候，一位同事说 ，唯一索引+一个非索引字段，是否可能会锁全表呢？本文田螺哥将通过9个实验操作的例子，给大家验证select...for update到底加了什么锁，是表锁还是行锁。",
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"article_summary": "一个事务具有ACID特性，也就是（Atomicity、Consistency、Isolation、Durability，即原子性、一致性、隔离性、持久性），本文主要讲解一下其中的Isolation，也就是事务的隔离性。",
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