Building microservices well requires addressing the challenges of distributed systems through established patterns — for service communication, data management, resilience, and observability. These patterns help manage the inherent complexity of microservices.
Communication and API patterns
✓ API GATEWAY → single entry point; centralizes cross-cutting concerns (routing, auth, etc.)
✓ SERVICE DISCOVERY → services find each other dynamically (registry) as instances change
✓ Sync (REST/gRPC) for request/response; ASYNC (events/queues) for decoupling → prefer
async/events to reduce coupling where possible
✓ BFF (Backend for Frontend) → tailored gateways per client type
