I can personally guarantee to you from direct current experience that there is nothing particularly solved about running services for even 50 million users. Go

I can personally guarantee to you from direct current experience that there is nothing particularly solved about running services for even 50 million users. Go watch this: https://www.youtube.com/watch?v=TneLO5TdW_M# https://www.youtube.com/watch?v=TneLO5TdW_M#