[GitHub] tanhaoqin opened a new issue #4280: Add caching at df level

[GitBox <gi...@apache.org>]

tanhaoqin opened a new issue #4280: Add caching at df level
URL: https://github.com/apache/incubator-superset/issues/4280
 
 
   Make sure these boxes are checked before submitting your issue - thank you!
   
   - [ ] I have checked the superset logs for python stacktraces and included it here as text if any
   - [ ] I have reproduced the issue with at least the latest released version of superset
   - [ ] I have checked the issue tracker for the same issue and I haven't found one similar
   
   
   ### Superset version
   Master version
   
   ### Expected results
   The caching feature of superset currently is only used in in **get_payload** which is a function that is called to retrieve the HTTP response sent to the client when they are loading a vizualisation.
   
   **get_payload** makes a **get_df** function call and passes the retrieved df to a **get_data** function which generates the data that is saved in the payload.
   
   When you are downloading a csv file for a slice from a dashboard, the get_csv function is called which calls **get_df**, an intermediate function within get_payload.
   
   If we were to cache at a dataframe level **get_df**, instead of **get_payload**, we can provide caching to more features such as downloading csv files.
   
   I'm raising this issue as it is a common use case from our company that we have multiple team members downloading the same slice as csv having to go through the full processing time each time.
   
   ### Actual results
   
   To implement caching at a data frame level so that the benefits of caching can be passed down to more features such as downloading slice csv files from dashboards. Any feedback or suggestions?
   
   ### Steps to reproduce
   
   
   

----------------------------------------------------------------
This is an automated message from the Apache Git Service.
To respond to the message, please log on GitHub and use the
URL above to go to the specific comment.
 
For queries about this service, please contact Infrastructure at:
users@infra.apache.org


With regards,
Apache Git Services