zhaoyongjie edited a comment on pull request #17882:
URL: https://github.com/apache/superset/pull/17882#issuecomment-1011038742


   > > I can create the same cache of form_data and not any limitation. Is it 
by design?
   > 
   > @zhaoyongjie Yes. It's by design. This is especially useful when a user 
shares a URL with someone. We save the same content over a different key so 
that any modification made by a user does not affect the other one.
   
   The problem is that the same user session and the same query payload. It 
will generate the different cache keys. In the other word,  ~~EVERY HTTP 
request~~ will generate a new **record** or **entity** in cache system. It will 
quickly consume the cache system.
   
   ---------
   Additional information:
   Every HTTP POST request with the same cache entity(like form_data) will 
generate a new **record** in cache system even though same user and chart.
   
   
   


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