[zerbinxx]

The thing with the microservice + do separation problem is that by the time you’re forced to do it, the cost to migrate and split data out of a single source into many (potentially all at once) is extremely great. Last at work week a trio of services which rely on the same physical db had a problem where they were both locked out because of a problem with the logic in one of them. This caused an outage that lasted 5 hours and resulted in a (possible) loss of several months worth of their dev team’s funding. At a certain scale you try to proactively lessen the impact of possible events like these because the math works out.

If you’re at that scale, then great, do that. But I also fully agree that cargo-culting that kind of decision out of the gate can be a massive waste of money.