The rate of creation is like meh, but being able to enumerate all of the repos might be problematic, following new repos and scanning them for leaked credentials could be a negative... but github may have a feed of new repos anyway?
Also, having a sequence implies at least a global lock on that sequence during repo creation. Repo creation could otherwise be a scoped lock. OTOH, it's not necessarily handled that way --- they could hand out ranges of sequences to different servers/regions and the repo id may not be actually sequential.
Also, having a sequence implies at least a global lock on that sequence during repo creation. Repo creation could otherwise be a scoped lock. OTOH, it's not necessarily handled that way --- they could hand out ranges of sequences to different servers/regions and the repo id may not be actually sequential.