Why it matters

Microservices are common but often mis-adopted. Understanding shapes appropriate use.

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The architecture

Per-service: own DB, own team, own deploy.

Communication: REST, gRPC, events.

Microservices tenetsPer-service DBown storageIndependent deployteam + teamService communicationREST/gRPC/eventsConsider modular monolith first; microservices for real scale + team autonomy needs
Microservices structure.
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How it works end to end

Bounded contexts: DDD-driven service boundaries.

Distributed tracing: essential for observability.

Service mesh: Istio, Linkerd for cross-cutting.

Anti-pattern: microservices when monolith would work.