michellethomas commented on issue #5545: [bugfix] don't cache empty dataframe URL: https://github.com/apache/incubator-superset/pull/5545#issuecomment-413273959 One reason to consider not caching `no data` is that on errors in explore we don't show the button to force refresh the cache. So if it is a transient issue, there's no clear way in the UI to update the chart. Alternatively we could always show the force refresh button if the data is cached (regardless of if it was an error).
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