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microservices: pros and cons .
Worst case: the distributed monolith Communication, state and resilience .
Database per service, shared DB, event sourcing .
One team owns the product end to end.
You deploy a few times per day, not hundreds.
Different modules need different scaling profiles.
one codebase still fits in one team’s head .
Microservices Architecture Why teams eventually split a monolith The trigger is usually not code size alone.
A small checkout change requires a full regression pass across unrelated modules.
The shared database becomes a coordination point for everything.