"- Each microservice has less than 150LOC"
Sounds like a nightmare, you know how much instances / vms you need if you spawn one thing for 150LOC?
Sounds like a nightmare, you know how much instances / vms you need if you spawn one thing for 150LOC?
This is illustrative of the point I was making.
One of the big benefits of microservices is the total decoupling of the code from the underlying hardware. Things are glued together by Ops, not by code. So you might have all the microservices in one VM -- or spread copies of one critical microservice across a thousand vms. It's all configurable.
Properly designed, the execution model is orthogonal and the service itself doesn't care if it's invoked in-process or not. It delegates that to some other manager, which probably has a service interface of its own.
It's about sane abstract system boundaries, not mapping to real world facilities.