Client-driven APIs with a strongly-typed schema
Day 1
Schema Design, Resolvers & Production Patterns
- GraphQL fundamentals: queries, mutations, subscriptions, fields, arguments
- Schema Definition Language (SDL): types, interfaces, unions, enums, input types
- Spring for GraphQL: @QueryMapping, @MutationMapping, @SubscriptionMapping
- DataFetcher and the execution model: how resolvers compose
- N+1 problem in GraphQL: DataLoader batching with Spring for GraphQL
- Pagination: Relay Cursor Connections spec
- Error handling: GraphQL errors vs HTTP errors, partial responses
- Subscriptions: WebSocket-based real-time updates
- Authentication and authorization at the field level
- Schema introspection and tooling: GraphiQL, Altair, code generation
- Federation basics: combining multiple GraphQL services into one graph
What your team walks away with
Developers who can design clean GraphQL schemas, implement resolvers correctly, solve the N+1 problem, and put GraphQL into production on Spring Boot.
- Design GraphQL schemas with proper type modeling and interface patterns
- Implement resolvers with Spring for GraphQL and solve N+1 with DataLoader
- Handle errors, pagination, and subscriptions in a production-grade API
- Apply field-level authorization without leaking data across resolver boundaries
Book the GraphQL training
A focused one-day course. Can be extended to include federation and schema stitching for teams building API gateways.
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