graphql-api-design

Design a production-ready GraphQL schema by defining typed schemas with modular resolvers, implementing DataLoader patterns for batching database queries, and adding authentication and authorization guards. This ensures performance optimization, security, and maintainability across Apollo Server and GraphQL Yoga implementations.

GraphQL federation composes multiple GraphQL subgraphs into a single API via Apollo Federation v2, allowing teams to own separate schema domains while maintaining a unified gateway. Use federation when scaling across multiple services or teams requires independent schema deployment and composition.

Optimize GraphQL performance using DataLoader for query batching, implementing caching strategies, and monitoring query complexity. Add tracing and metrics integration with Apollo Studio and other observability tools to identify bottlenecks and track production deployment behavior.

Yes, Apollo Federation v2 works with both Apollo Server and GraphQL Yoga as gateway and subgraph implementations. Both frameworks support federation-ready architectures, schema composition, and production deployment patterns outlined in Federation v2 specifications.

Implement comprehensive testing strategies covering resolver logic, authorization guards, and error handling across schema validation and execution. Handle errors explicitly in resolvers and subscribe to observability events for production monitoring and debugging.

Set up authentication by validating tokens in resolver context, then enforce authorization using guards that check permissions before resolving fields. Integrate with subscriptions and federation subgraphs to ensure consistent access control across the entire API.