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SAGA模式支持sql解析吗 about dtm HOT 2 CLOSED

dtm-labs avatar dtm-labs commented on August 28, 2024
SAGA模式支持sql解析吗

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Comments (2)

yedf2 avatar yedf2 commented on August 28, 2024 1

您好，无论是seata还是其他的分布式事务框架，SAGA模式的回退都是手动写的补偿函数

seata里面的AT模式是采用sql解析回退，这种实现有潜在的脏回滚问题。他的原理是解析SQL，把修改前的数据保存起来，当回滚时，将原先的数据再写入。在性能方面，当前的AT模式比XA好一些，但是在修改后回滚前，数据又被其他人修改，就会导致脏回滚，有数据一致性上的问题。

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zhangxiaoyus avatar zhangxiaoyus commented on August 28, 2024

我明白了，谢谢

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