I want to share user data between two forums, so that a user can log into both with the same account and have the same account metadata. Currently I'm patching one of the forum's code (mainly src/user and src/groups) so that it reads/writes from the other forum's database.
My question is: would this be a good way to share the user data? What could be the caveat? Currently my code is working-ish but I need to know more about this before I can migrate my production database.