Backward searchafter functionality

Is it possible to have a search_before api using sort curser, same as search_after?
When having large amount of results, it makes more sense to implement backend scroll up instead of cashing all results in the app.

I'm not an expert at all on search_after but have you tried reversing the sort?

Nice idea, but I still need to re-sort elastic results before sending the page to the app.
Getting this functionality in elastic will be the optimized way.

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