Graphql Api Development

This is a comprehensive reference for building GraphQL APIs with graphql-js, covering everything from schema design and type systems to resolvers, queries, mutations, and subscriptions. It shines when explaining practical patterns like using DataLoader to solve N+1 query problems, cursor-based pagination following Relay conventions, and union types for polymorphic returns. The skill includes honest guidance on when GraphQL makes sense versus sticking with REST, noting that simple CRUD operations or file uploads might not justify the learning curve. You'll find concrete examples of both SDL and programmatic schema definitions, plus production concerns like authentication, caching strategies, and field-level error handling. Good for developers building flexible APIs that serve multiple client types or need precise data fetching without over-fetching.