GraphQL

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Just for those curious minds who always jump from one branch to another like mine:

• Hasura
• GraphQL VS REST.
• Testing GraphQL API

You can find a good definition usually in glossary.

1. Intro.
2. Data types.
3. A simple todo app written with GraphQL + ReactJS + Relay:
   • Backend.
   • Frontend TK.
4. Queries and mutations in depth.
5. Let’s breakdown the query language a bit more.
6. Functions provided by graphql.
7. Document your GraphQL service API.
8. GraphQL request lifecycle.
   • Common validation errors.
   • Execution from inside, resolver’s args, AST, …
9. Code-first approach.
10. Auth.
11. How to query information about a GraphQL schema.
12. Improve developer experience.
    • IoC – Inversion of Control principle.
    • Use a schema.graphql file
    • Strongly typed resolvers, context, ….
    • Filtering using prisma-nestjs-graphql.
13. Security in GraphQL.
14. NestJS.
    • Query complexity.
    • Query depth and complexity in one package.
    • Write E2E tests for GraphQL.
    • Nested field validation with class-validator in a GraphQL mutation.
    • In GraphQL we do not have union types, instead you can use @oneOf directive, learn more about it here. To see how you can do it in NestJS you can check my testOneOf API.
15. Subscription.
16. Best practices.
    • Serve over HTTP.
    • Compress your request/response with GZIP.
    • Avoid versioning.
    • Most of the times fields are nullable.
    • Pagination.
    • Communication with a GraphQL service.
    • Batching.
    • Caching.