Breaking REST Chains_ A Fastify & Mercurius Pathway to GraphQL Glory.pdf

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This document contains slides from a presentation by Luca Del Puppo about building GraphQL servers using Fastify and Mercurius. The presentation introduces GraphQL and its advantages over REST APIs. It then discusses why Mercurius is a good choice for building GraphQL servers on Fastify and outlines some features it provides out of the box. The presentation concludes by providing resources for learning more about Fastify, Mercurius and building GraphQL servers.

23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory
https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 1/37

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1. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 1/37

2. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 2/37 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory Luca Del Puppo

3. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 3/37

4. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 4/37 Luca Del Puppo Senior Software Developer

5. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 5/37 JavaScript enthusiast TypeScript lover “Youtuber” “Writer” Love sport: running, hiking Love animals

6. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 6/37 Why GraphQL?_

7. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 7/37 Rest API

8. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 8/37 Desktop Browsers Mobile Browsers Other Browsers TVs,

9. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 9/37 SmartWatch s..

10. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 10/37 Bill is 22. He is a Junior Backend Developer who fights with the Frontend and Mobile

11. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 11/37 developers to build a specific endpoint for every single view, with just some different fields but the same logic

12. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 12/37 Desktop Browsers

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16. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 16/37

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18. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 18/37

19. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 19/37 But remember every layer is a cost

20. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 20/37 Why Mercurius?_

21. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 21/37 is a high-performance GraphQL adapter for the web framework It has many core features and plugins for building world-class production-ready applications It supports advanced features out of the box, such as and Subscriptions It's entirely Open Source and made available under the MIT license Fantastic community Mercurius Fastify Apollo Federation specifications

22. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 22/37 Caching of query parsing and validation Automatic loader integration to avoid the N+1 problem Just-In-Time compiler via graphql-jit Subscriptions Federation support Federated subscriptions support Gateway implementation, including Subscriptions Batched query support Customizable persisted queries Core features_

23. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 23/37 Today recipe_

24. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 24/37 . Build a GraphQL server with Mercurius Fastify and JavaScript 2. Convert it to TypeScript 3. Resolve 1+N problem 4. Add Custom Directives or Validations 5. Add Authentication 6. Working with Federation

25. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 25/37 Let's get our hands dirty_

26. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 26/37 Conclusion_

27. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 27/37 Don't hate REST API Build one use from everyone Build with Mercurius is a piece of cake Don't forget, using Mercurius all the Fastify's benefits are there with you Be careful with the layers in your Applications Give the right power to your Frontend Developers Don't forget to monitor your server

28. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 28/37 About this presentations_ Slides

29. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 29/37 Code

30. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 30/37 Resources to read_ Fastify: Mercurius: Nearform Blog: Backend Caffe: https://fastify.dev/ https://mercurius.dev/ https://nearform.hashnode.dev/ https://backend.cafe/

31. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 31/37 Resources to watch_ Nearform: Adventures in Nodeland: https://www.youtube.com/@Nearform https://www.youtube.com/@adventuresinnodeland

32. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 32/37 Book_

33. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 33/37

34. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 34/37

35. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 35/37 Luca Del Puppo @puppo92 Luca Del Puppo Puppo_92 @puppo

36. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 36/37 We are hiring

37. 23/02/24, 10:45 Breaking REST Chains: A Fastify & Mercurius Pathway to GraphQL Glory https://slides.com/puppo92/breaking-rest-chains-a-fastify-mercurius-pathway-to-graphql-glory/fullscreen 37/37 Thank you!_ Speaker notes

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