[zandl]

It’s easier if you have one lookup key for a session, but often that’s not sufficient, consider the case of termination of a session by email address or by a session id. The other issue is you still have every service making high rates of network calls that require low latency since they’re often inline with the UX. So you’re relying more on a chain of IO between services which is nearly impossible to performance troubleshoot with today’s tooling.