I’ve seen microservice efforts collapse because teams couldn’t let go of shared databases.
Here’s what went wrong:
- Coupled data models → fragile services
- Shared tables → ownership ambiguity
- Cross-service joins → impossible to scale
We fixed this by:
- Assigning strict ownership per bounded context
- Exposing only APIs and asynchronous events
- Moving reporting to an async materialized layer
Microservices need boundaries. And boundaries need enforcement.