java - Spring事务中requires_new和嵌套传播的区别

Question

我无法理解 PROPAGATION_REQUIRES_NEW 和 PROPAGATION_NESTED 传播策略之间的行为差​​异。在我看来，在这两种情况下，当前进程都是回滚的，而不是整个事务。有什么线索吗？

Answer 1

查看此链接:PROPAGATION_NESTED versus PROPAGATION_REQUIRES_NEW? Juergen Hoeller 解释得很好。 -- Spring 源码论坛自 2019 年 2 月 28 日起完全下线，但您可以在下面的引文中阅读文章的相关部分

PROPAGATION_REQUIRES_NEW starts a new, independent "inner" transactionfor the given scope. This transaction will be committed or rolled backcompletely independent from the outer transaction, having its ownisolation scope, its own set of locks, etc. The outer transaction willget suspended at the beginning of the inner one, and resumed once theinner one has completed. ...

PROPAGATION_NESTED on the other hand starts a "nested" transaction,which is a true subtransaction of the existing one. What will happenis that a savepoint will be taken at the start of the nestedtransaction. Íf the nested transaction fails, we will roll back tothat savepoint. The nested transaction is part of of the outertransaction, so it will only be committed at the end of of the outertransaction. ...