/design-service

Design a backend service architecture with clear boundaries, data models, and API contracts.

Steps

1. Define the service scope: 2. Design the data model: 3. Design the API layer: 4. Plan the service internals: 5. Design inter-service communication: 6. Plan for observability: 7. Document the service contract.

Format

Service: <name>
Domain: <what it owns>
Entities: <data model summary>
API Endpoints: <list>

Rules

• Each service should own its data; no shared databases.
• Design for failure: every external call can fail.
• Use interface segregation; expose only what consumers need.