Fast and low overhead web framework, for Node.js

An efficient server implies a lower cost of the infrastructure, a better responsiveness under load and happy users. How can you efficiently handle the resources of your server, knowing that you are serving the highest number of requests as possible, without sacrificing security validations and handy development?

Enter Fastify. Fastify is a web framework highly focused on speed and low overhead. It is inspired from Hapi and Express and as far as we know, it is one of the fastest web frameworks in town. Use Fastify can increase your throughput up to 100%.

Install

npm i fastify --save

Example

// Require the framework and instantiate it
const fastify = require('fastify')()

// Declare a route
fastify.get('/', function (request, reply) {
  reply.send({ hello: 'world' })
})

// Run the server!
fastify.listen(3000, function (err) {
  if (err) throw err
  console.log(`server listening on ${fastify.server.address().port}`)
})

Do you want to know more? Head to the Getting Started.

Core features

• 100% asynchronous: all the core is implemented with asynchronous code, in this way not even a millisecond is wasted.
• Highly performant: as far as we know, Fastify is one of the fastest web frameworks in town, depending on the code complexity we can serve up to 20000 request per second.
• Extendible: Fastify is fully extensible via its hooks, plugins and decorators.
• Schema based: even if it is not mandatory we recommend to use JSON Schema to validate your routes and serialize your outputs, internally Fastify compiles the schema in an highly performant function.
• Logging: logs are extremely important but are costly; we chose the best logger to almost remove this cost, Pino!
• Developer friendly: the framework is built to be very expressive and help the developer in his daily use, without sacrificing performance and security.

Benchmarks

Machine: Intel Xeon E5-2686 v4 @ 2.30GHz (4 cores, 8 threads), 16GiB RAM (Amazon EC2 m4.xlarge)

Method:: autocannon -c 100 -d 5 -p 10 localhost:3000 * 2, taking the second average

Documentation

• Getting Started
• Server Methods
• Routes
• Logging
• Middlewares
• Hooks
• Decorators
• Validation and Serialize
• Lifecycle
• Reply
• Request
• Content Type Parser
• Plugins
• Testing
• Plugins Guide

Ecosystem

• point-of-view Templates rendering (ejs, pug, handlebars, marko) plugin support for Fastify.
• fastify-mongodb Fastify MongoDB connection plugin, with this you can share the same MongoDb connection pool in every part of your server.
• fastify-redis Fastify Redis connection plugin, with this you can share the same Redis connection in every part of your server.
• fastify-swagger Swagger documentation generator for Fastify
• fastify-multipart Multipart support for Fastify
• fastify-bearer-auth Bearer auth plugin for Fastify
• fastify-pigeon Bankai assets compiler for Fastify
• fastify-react React server side rendering support for Fastify with Next
• fastify-jwt JWT utils for Fastify, internally uses jsonwebtoken
• fastify-websocket WebSocket support for Fastify. Built upon websocket-stream
• fastify-helmet Important security headers for Fastify
• fastify-auth Run multiple auth functions in Fastify
• fastify-leveldb Plugin to share a common LevelDB connection across Fastify.
• fastify-apollo Run an Apollo Server with Fastify.
• fastify-accepts to have accepts in your request object.
• fastify-accepts-serializer to serialize to output according to Accept header
• fastify-sse to provide Server-Sent Events with reply.sse( … ) to Fastify
• More coming soon

Team

Matteo Collina

https://github.com/mcollina

https://www.npmjs.com/~matteo.collina

https://twitter.com/matteocollina

Tomas Della Vedova

https://github.com/delvedor

https://www.npmjs.com/~delvedor

https://twitter.com/delvedor

Acknowledgements

This project is kindly sponsored by:

• nearForm
• LetzDoIt

License

Licensed under MIT.