I’m a big fan of monolithic architecture. Writing code is hard enough without each function call requiring a network request, and that’s before considering the investment in observability, RPC frameworks, and dev environments you need to be productive in a microservice environment.

But having spent half a decade stewarding a Ruby monolith from 20 to 200 engineers and watched its modest 10GB Postgres database grow beyond 5TB, there’s definitely a point where the pain outweighs the benefits.