This site, and the repository.
This is GraphQL course curriculum, course work, and related assets focused around Spring Boot Java GraphQL APIs.
- Introduction to GraphQL
- GraphQL Schema Definition Language (SDL)
- Scalar types (String, Int, Float, Boolean, etc.)
- Object types and fields
- Query and mutation types
- Input types
- Enum types
- GraphQL Queries
- Query structure and syntax
- Querying fields and nested fields
- Arguments and variables in queries
- Aliases and fragments
- Querying related data with connections
- GraphQL Mutations
- Creating, updating, and deleting data with mutations
- Input types in mutations
- Mutation response types and error handling
- Batch mutations
- Optimistic UI updates with mutations
- GraphQL Subscriptions
- Real-time data updates with subscriptions
- Subscribing to data changes
- Setting up a subscription server
- WebSocket protocols for subscriptions
- Handling subscription events on the client
- Pagination and Filtering
- Implementing pagination with cursors and limits
- Filtering data with arguments
- Sorting results
- Relay pagination specification
- Authentication and Authorization
- Securing GraphQL APIs
- Authentication mechanisms (JWT, OAuth, etc.)
- Protecting queries and mutations with authorization rules
- Role-based access control (RBAC)
- Handling authentication errors
- Performance and Caching
- Efficient data fetching with GraphQL
- Data loader pattern for batch loading
- Caching GraphQL responses
- Optimizing resolver functions
- Pagination and batching strategies
- Advanced Topics
- Schema stitching and federation
- Custom directives
- Error handling and validation
- Introspection and schema introspection
- GraphQL tooling and libraries (Apollo, Relay, etc.)
Example scenarios for each topic will vary depending on the application domain, but here are some general examples:
- Topic: GraphQL Queries Example: Retrieving a user's profile information and their associated posts and comments.
- Topic: GraphQL Mutations Example: Creating a new user account with the provided email and password.
- Topic: GraphQL Subscriptions Example: Subscribing to real-time updates for a chat application.
- Topic: Pagination and Filtering Example: Fetching paginated lists of products with filtering options like category and price range.
- Topic: Authentication and Authorization Example: Authenticating a user and allowing access to certain resources based on their role.
- Topic: Performance and Caching Example: Optimizing the fetching of related data by using data loaders and caching strategies.
These examples should help provide a practical understanding of each topic while demonstrating the power and flexibility of GraphQL.