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    README.md

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    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 providing the best developer experience with the least overhead and a powerful plugin architecture. It is inspired by Hapi and Express and as far as we know, it is one of the fastest web frameworks in town.

    Requirements

    Node.js v10 LTS (10.16.0) or later.

    Quick start

    Create a folder and make it your current working directory:

    mkdir my-app
    cd my-app

    Generate a fastify project with npm init:

    npm init fastify

    Install dependencies:

    npm install

    To start the app in dev mode:

    npm run dev

    For production mode:

    npm start

    Under the hood npm init downloads and runs Fastify Create, which in turn uses the generate functionality of Fastify CLI.

    Install

    If installing in an existing project, then Fastify can be installed into the project as a dependency:

    Install with npm:

    npm i fastify --save

    Install with yarn:

    yarn add fastify

    Example

    // Require the framework and instantiate it
    const fastify = require('fastify')({
      logger: true
    })
    
    // Declare a route
    fastify.get('/', (request, reply) => {
      reply.send({ hello: 'world' })
    })
    
    // Run the server!
    fastify.listen(3000, (err, address) => {
      if (err) throw err
      fastify.log.info(`server listening on ${address}`)
    })

    with async-await:

    const fastify = require('fastify')({
      logger: true
    })
    
    fastify.get('/', async (request, reply) => {
      reply.type('application/json').code(200)
      return { hello: 'world' }
    })
    
    fastify.listen(3000, (err, address) => {
      if (err) throw err
      fastify.log.info(`server listening on ${address}`)
    })

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

    Fastify v1.x and v2.x

    Code for Fastify's v1.x is in branch 1.x, so all Fastify 1.x related changes should be based on branch 1.x. In a similar way, all Fastify v2.x related changes should be based on branch 2.x.

    Note

    .listen binds to the local host, localhost, interface by default (127.0.0.1 or ::1, depending on the operating system configuration). If you are running Fastify in a container (Docker, GCP, etc.), you may need to bind to 0.0.0.0. Be careful when deciding to listen on all interfaces; it comes with inherent security risks. See the documentation for more information.

    Core features

    • 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 76+ thousand requests 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 a 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 their daily use, without sacrificing performance and security.

    Benchmarks

    Machine: EX41S-SSD, Intel Core i7, 4Ghz, 64GB RAM, 4C/8T, SSD.

    Method:: autocannon -c 100 -d 40 -p 10 localhost:3000 * 2, taking the second average

    Framework Version Router? Requests/sec
    Express 4.17.1 15,978
    hapi 19.1.0 45,815
    Restify 8.5.1 49,279
    Koa 2.13.0 54,848
    Fastify 3.0.0 78,956
    -
    http.Server 12.18.2 70,380

    Benchmarks taken using https://github.com/fastify/benchmarks. This is a synthetic, "hello world" benchmark that aims to evaluate the framework overhead. The overhead that each framework has on your application depends on your application, you should always benchmark if performance matters to you.

    Documentation

    中文文档地址

    Ecosystem

    • Core - Core plugins maintained by the Fastify team.
    • Community - Community supported plugins.
    • Live Examples - Multirepo with a broad set of real working examples.
    • Discord - Join our discord server and chat with the maintainers.

    Support

    Please visit Fastify help to view prior support issues and to ask new support questions.

    Team

    Fastify is the result of the work of a great community. Team members are listed in alphabetical order.

    Lead Maintainers:

    Fastify Core team

    Fastify Plugins team

    Great Contributors

    Great contributors on a specific area in the Fastify ecosystem will be invited to join this group by Lead Maintainers.

    Past Collaborators

    Hosted by

    We are a Growth Project in the OpenJS Foundation.

    Acknowledgements

    This project is kindly sponsored by:

    Past Sponsors:

    License

    Licensed under MIT.

    For your convenience, here is a list of all the licenses of our production dependencies:

    • MIT
    • ISC
    • BSD-3-Clause
    • BSD-2-Clause

    项目简介

    🚀 Github 镜像仓库 🚀

    源项目地址

    https://github.com/fastify/fastify

    发行版本 111

    v3.19.2

    全部发行版

    贡献者 370

    全部贡献者

    开发语言

    • JavaScript 95.2 %
    • TypeScript 4.7 %
    • Shell 0.0 %