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美团一面：四种事务隔离级别分别是怎么实现的表格错误 #9

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YfDebug opened this issue May 11, 2022 · 0 comments

YfDebug commented May 11, 2022

关于“丢失更新”，似乎前两个隔离级别并不会解决上文所提到的逻辑上的丢失更新问题。

例如，在其他博客中所查到，“READ UNCOMMITTED 读取未提交”采用“一级封锁协议，只对修改数据的并发操作做限制”，那么是无法解决“丢失更新”问题。

由于手边没有书籍，无法找到更权威的解释，望作者解惑！！

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