Redis在Lcn中的使用如何保证跟数据库中事务组数据的一致性，如果redis节点宕机，怎么保证事务组的事务提交和回滚正常？

## Why you need it?
 Is your feature request related to a problem? Please describe in details


## How it could be?
A clear and concise description of what you want to happen. You can explain more about input of the feature, and output of it.


## Other related information
Add any other context or screenshots about the feature request here.
