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Creating a GraphQL API in Python: from Django to fully asynchronous
The document presents a workshop on creating a GraphQL API in Python, specifically using Django and asynchronous techniques, featuring speakers Marcin Gębala and Patryk Zawadzki. It outlines essential concepts of GraphQL, including queries, mutations, and schema definitions, and introduces the Ariadne library for schema-first implementation. Additionally, it highlights Saleor, an open-source e-commerce platform that employs Django and GraphQL as its backend technologies.
Creating a GraphQL API in Python: from Django to fully asynchronous
- 1. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Creating a GraphQL API in Python: from Django to fully asynchronous Marcin Gębala & Patryk Zawadzki DjangoCon Europe 2019
- 2. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE About us Marcin Gębala Python developer @ Mirumee Software, Lead developer @ Saleor github.com/maarcingebala @maarcingebala Patryk Zawadzki Head of Technology @ Mirumee Software, Python developer github.com/patrys @patrys
- 3. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Agenda ■ Saleor ■ GraphQL - core concepts ■ Workshop
- 4. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE https://github.com/mirumee/graphql-workshop
- 5. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Saleor - open-source e-commerce platform Backend: Django + GraphQL API (Graphene) Frontend: TypeScript + Apollo Client + React github.com/mirumee/saleor
- 6. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE ■ Single endpoint, single request ■ Client defines what data to fetch ■ Strong typing ■ Introspection ■ Queries, mutations, subscriptions GraphQL - core concepts
- 7. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Queries ■ Queries allow fetching data from the server. ■ Each query has a resolver - a function that defines how to fetch the data from a data source (any).
- 8. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Mutations ■ Mutations allow modifying data on the server.
- 9. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE ■ A schema file defines the types and operations available in the API. ■ A clear contract between backend and frontend ■ Easy to find usages of particular types Schema
- 10. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Ariadne github.com/mirumee/ariadne Ariadne is a Python library for implementing schema-first GraphQL servers that is simple to use and open for extension. ■ Schema-first approach ■ Inspired by Apollo Server
- 11. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE https://github.com/mirumee/graphql-workshop
- 12. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Intermission: asyncio
- 13. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE Event loop example from Python’s documentation
- 14. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE https://github.com/mirumee/graphql-workshop
- 15. COPYRIGHT © 2009–2019MIRUMEE SOFTWARE THANK YOU! @maarcingebala @patrys