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Service boundaries, communication patterns, event sourcing, CQRS, and distributed tracing
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| name | microservices |
| description | Service boundaries, communication patterns, event sourcing, CQRS, and distributed tracing |
| metadata | {"author":"cosmicstack-labs","version":"1.0.0","category":"backend","tags":["microservices","architecture","distributed-systems","event-sourcing","cqrs"]} |
Design and operate microservice architectures.
| Pattern | Type | When |
|---|---|---|
| REST | Sync | Request-response, CRUD |
| gRPC | Sync (fast) | Internal, high throughput |
| Event | Async | Decoupled workflows |
| Message Queue | Async | Buffered, reliable delivery |
Service A → Event Bus → Service B
→ Service C
→ Service D
Benefits: eventual consistency, loose coupling, replayability.
❌ Shared database between services ❌ Sync chains (A → B → C → D blocking) ❌ Distributed monolith (microservices but deployed together) ❌ Absent monitoring ("it works in dev") ❌ Premature decomposition (start monolith, extract carefully)