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More thumbnails than videos

Where would thumbnails be stored? There will be a lot more thumbnails than videos. If we assume that every video will have five thumbnails, we need to have a very efficient storage system that can serve huge read traffic. There will be two consideration before deciding which storage system should be used for thumbnails:

Why are there more thumbnails than videos. Doesn’t each video only have one thumbnail?

Hi @Dewey_Munoz ,
No, each video has multiple thumbnails. Netflix’s objective was to develop the best, unifying image that would grab viewers’ interest. For example, we have an example of Netflix series that is “Stranger Things”. If you watch a lot of comedies, Netflix will show you a Stranger Things thumbnail with the kids dressed up as Ghostbusters and if you watch a lot of romantic comedies it will show you a Stranger Thing thumbnail with Joyce and Hopper.