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GraphQL Complete Guide

APIs that ask for exactly what they need.

Learn GraphQL from schema basics to production patterns. Cover resolvers, authentication, subscriptions, federation, caching, testing, and performance optimization.

5 modules 18 lessons ~12h Certificate of completion
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Syllabus

  1. Module 1

    GraphQL fundamentals

    Understand what GraphQL is, how schemas and resolvers work, and when to choose it over REST.

    4 lessons
    1. What is GraphQL →
    2. Schema and resolvers →
    3. Schema design best practices →
    4. GraphQL vs REST tradeoffs →

  2. Module 2

    Core patterns

    Master resolver composition, error handling, pagination, and file uploads.

    4 lessons
    1. Resolver patterns explained →
    2. Error handling patterns →
    3. Pagination patterns →
    4. File uploads →

  3. Module 3

    Auth and real-time

    Secure your API with authentication and authorization, add real-time subscriptions, and apply rate limiting.

    3 lessons
    1. Authentication and authorization →
    2. Subscriptions and real-time data →
    3. Rate limiting strategies →

  4. Module 4

    Performance and scaling

    Solve N+1 queries with DataLoader, implement caching, manage query complexity, and scale with federation.

    4 lessons
    1. DataLoader and the N+1 problem →
    2. Caching strategies →
    3. Performance and query complexity →
    4. Federation for microservices →

  5. Module 5

    Production tooling

    Generate type-safe code, write robust tests, and integrate GraphQL with Prisma.

    3 lessons
    1. Code generation with TypeScript →
    2. Testing strategies →
    3. GraphQL with Prisma →

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