[GitHub] [openwhisk] upgle commented on issue #4215: only nodejs and python runtime can reuse global scope variable

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upgle commented on issue #4215: only nodejs and python runtime can reuse global scope variable
URL: https://github.com/apache/openwhisk/issues/4215#issuecomment-583199661
 
 
   If you use a global variable, as you said, you can reuse the DB connection pool or use the cache layer.
   
   I think it is more useful to use it if the action code developer understands the global object well. (you should handle an exception, and consider the memory limit of the container. )
   
   There are also some examples of actually using the global object to retain state.
   
   - https://www.trek10.com/blog/stateless/
   - https://rewind.io/blog/simple-caching-in-aws-lambda-functions/

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