(googler, opinions are my own. I know nothing about youtube specifically) Youtube likely has lots of moving parts to host all the different systems. Video co

(googler, opinions are my own. I know nothing about youtube specifically) Youtube likely has lots of moving parts to host all the different systems. Video content, search, browse, player, etc... could all be different bits. And it's also fun to know that video content itself may not be hosted directly by Google, as you could get it from the GGC (Google Global Cache)[0]. When you have a system as big as Youtube, you need to think about all the different ways you can slice different parts of the service. If any of those parts could be more optimized by having the data stored/sorted in some different way, it likely is. [0] https://support.google.com/interconnect/answer/9058809?hl=en https://support.google.com/interconnect/answer/9058809?hl=en