Hakunata commented on issue #742:
URL: 
https://github.com/apache/servicecomb-pack/issues/742#issuecomment-1053799436


   > Just like the calling commit method with JDBC, it could be failed,we can 
do some other recovery work later.
   > 
   > My suggestion is we check the balance or even withdraw some money from the 
account in the prepare method. If some thing wrong with the whole transaction, 
we can still do some recovery work in cancel method.
   > 
   > If the cancel method call is failed, we need to do some manually recovery 
work with more detail transaction context information then.
   > 
   > In this way , we can make our system more easy to maintain.
   
   It looks more like SAGA rather than TCC. 


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