Breaking REST Chains:
A Fastify & Mercurius Pathway to GraphQL Glory
Luca Del Puppo
Luca Del Puppo
- Senior Software Developer
- JavaScript enthusiast
- TypeScript lover
- “Youtuber”
- “Writer”
Love sport: running, hiking
Love animals
Why GraphQL?_
Rest API
Desktop Browsers
Mobile Browsers
Other Browsers
TVs, SmartWatchs..
Bill is 22.
He is a Junior Backend Developer who fights with the Frontend and Mobile developers to build a specific endpoint for every single view, with just some different fields but the same logic
Desktop Browsers
Mobile Browsers
Other Browsers
TVs, SmartWatchs..
Schema
Queries
Mutations
Subscriptions
You can scale your server "easily"_
But remember
every layer is a cost
Why Mercurius?_
- Mercurius is a high-performance GraphQL adapter for the Fastify 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 Apollo Federation specifications and Subscriptions
- It's entirely Open Source and made available under the MIT license
- Fantastic community
- 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_
Today recipe_
- Build a GraphQL server with Mercurius Fastify and JavaScript
- Convert it to TypeScript
- Resolve 1+N problem
- Add Custom Directives or Validations
- Add Authentication
- Working with Federation
- Build a GraphQL server with Mercurius Fastify and JavaScript
- Convert it to TypeScript
- Resolve 1+N problem
- Build a GraphQL server with Mercurius Fastify and TypeScript
- Resolve 1+N problem
Let's get our hands dirty_
Conclusion_
- 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
About this presentations_
Slides
Code
Resources to read_
- Fastify: https://fastify.dev/
- Mercurius: https://mercurius.dev/
- Nearform Blog: https://nearform.hashnode.dev/
- Backend Caffe: https://backend.cafe/
Resources to watch_
- Nearform: https://www.youtube.com/@Nearform
- Adventures in Nodeland:
https://www.youtube.com/@adventuresinnodeland
Book_
Luca Del Puppo
@puppo92
Luca Del Puppo
Puppo_92
@puppo
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