> The number of DAUs, mobile DAUs, MAUs, and mobile MAUs do not include Instagram users unless they would otherwise qualify as such users, respectively, based on their other activities on Facebook.
> With centralized solutions, like Perforce, Mercurial, etc...
I think you're incorrectly putting mercurial and perforce in the same bucket. Mercurial is a lot more like Git than perforce in that it's a DVCS. Facebook made it scale by using a lot of centralized caching, but most operations (diff, looking through history, branching, etc) can be done locally.
There was even someone who thought it was sentient! https://www.cnn.com/2022/07/23/business/google-ai-engineer-f...