I think we're in violent agreement - A database can be a queue and that doesn't link things as the same, but it's easy to break those promises and you need to b

I think we're in violent agreement - A database can be a queue and that doesn't link things as the same, but it's easy to break those promises and you need to be clear in that promise to begin with. If two "microservices" have to move in strict lockstep, they're not microservices, they're components of a larger service.