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You probably want to look into ShouldIndex https://world.episerver.com/documentation/developer-guides/find/Integration/episerver-cms-7-5-with-updates/Indexing/ , so basically you can create a convention that if a variant is not published, then do not index it. Remember this will be executed every time you make changes to a VariationContent, so make sure it's as fast as possible
As I undestand from here: "https://world.episerver.com/documentation/developer-guides/find/Integration/episerver-cms-7-5-with-updates/Indexing/"
During process of sku creation it is being created in database and in Epi Find. It is correct?
If so, is there is possible solution to don't index sku during creation to improve performance?