GraphQL Patterns (Apollo + TypeScript)

Use When

• Designing a new GraphQL API or migrating from REST
• Building Apollo Server + TypeScript with typed resolvers and clients
• Adopting Relay pagination, DataLoader, directive auth, or federation
• Hardening a GraphQL service for production

Do Not Use When

• Pure REST/gRPC — use api-design-first
• Threat-modelling GraphQL against malicious input — load graphql-security first
• Single canonical UI shape, CDN caching dominant — REST is simpler

Required Inputs

Domain entities + UI shapes; auth model (JWT/roles/tenants); federation needs; target clients and pagination style.