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添加事务拆分的文档 #14

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添加事务拆分的文档
May 28, 2025
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删除ds_store
May 28, 2025
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6 changes: 6 additions & 0 deletions feature/function-advance.md
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Expand Up @@ -30,6 +30,12 @@ UDB的数据库代理中间件，将多个主从节点整合为一个集群，
使用数据库代理后，可以开启SQL限流功能，可以根据业务需要在页面灵活配置SQL限流。
通过SQL限流可以控制耗时SQL的请求数量，保障数据库服务不会由于过多耗时SQL而降低性能。


## 事务拆分

开启事务拆分后，在默认的Read Committed隔离级别下，当MySQL关闭事务自动提交（即set autocommit=0;）后，
仅会在发生写操作时才正式开启事务，正式开启事务前的读请求将被路由到只读从库。

## 自动容错

数据库代理会对所属主从复制集群的所有节点，进行健康检查。 当发现主节点不可用时，
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