Fiber is an Express inspired web framework built on top of Fasthttp, the fastest HTTP engine for Go. Designed to ease things up for fast development with zero memory allocation and performance in mind.

⚡️ Quickstart

package main

import "github.com/gofiber/fiber"

func main() {
  app := fiber.New()

  app.Get("/", func(c *fiber.Ctx) {
    c.Send("Hello, World 👋!")
  })

  app.Listen(3000)
}

🤖 Benchmarks

These tests are performed by TechEmpower and Go Web. If you want to see all results, please visit our Wiki.

⚙️ Installation

First of all, download and install Go. 1.11 or higher is required.

Installation is done using the go get command:

go get -u github.com/gofiber/fiber

🎯 Features

• Robust routing
• Serve static files
• Extreme performance
• Low memory footprint
• API endpoints
• Middleware & Next support
• Rapid server-side programming
• Template engines
• WebSocket support
• Rate Limiter
• Translated in 15 languages
• And much more, explore Fiber

💡 Philosophy

New gophers that make the switch from Node.js to Go are dealing with a learning curve before they can start building their web applications or microservices. Fiber, as a web framework, was created with the idea of minimalism and follows the UNIX way, so that new gophers can quickly enter the world of Go with a warm and trusted welcome.

Fiber is inspired by Express, the most popular web framework on the Internet. We combined the ease of Express and raw performance of Go. If you have ever implemented a web application in Node.js (using Express or similar), then many methods and principles will seem very common to you.

We listen to our users in issues, Discord channel and all over the Internet to create a fast, flexible and friendly Go web framework for any task, deadline and developer skill! Just like Express does in the JavaScript world.

👀 Examples

Listed below are some of the common examples. If you want to see more code examples , please visit our Recipes repository or visit our hosted API documentation.

📖 Basic Routing

func main() {
  app := fiber.New()

  // GET /john
  app.Get("/:name", func(c *fiber.Ctx) {
    msg := fmt.Sprintf("Hello, %s 👋!", c.Params("name"))
    c.Send(msg) // => Hello john 👋!
  })

  // GET /john/75
  app.Get("/:name/:age/:gender?", func(c *fiber.Ctx) {
    msg := fmt.Sprintf("👴 %s is %s years old", c.Params("name"), c.Params("age"))
    c.Send(msg) // => 👴 john is 75 years old
  })

  // GET /dictionary.txt
  app.Get("/:file.:ext", func(c *fiber.Ctx) {
    msg := fmt.Sprintf("📃 %s.%s", c.Params("file"), c.Params("ext"))
    c.Send(msg) // => 📃 dictionary.txt
  })

  // GET /flights/LAX-SFO
  app.Get("/flights/:from-:to", func(c *fiber.Ctx) {
    msg := fmt.Sprintf("💸 From: %s, To: %s", c.Params("from"), c.Params("to"))
    c.Send(msg) // => 💸 From: LAX, To: SFO
  })

  // GET /api/register
  app.Get("/api/*", func(c *fiber.Ctx) {
    msg := fmt.Sprintf("✋ %s", c.Params("*"))
    c.Send(msg) // => ✋ /api/register
  })

  app.Listen(3000)
}

📖 Serving Static Files

func main() {
  app := fiber.New()

  app.Static("/", "./public")
  // => http://localhost:3000/js/script.js
  // => http://localhost:3000/css/style.css

  app.Static("/prefix", "./public")
  // => http://localhost:3000/prefix/js/script.js
  // => http://localhost:3000/prefix/css/style.css

  app.Static("*", "./public/index.html")
  // => http://localhost:3000/any/path/shows/index/html

  app.Listen(3000)
}

📖 Middleware & Next

func main() {
  app := fiber.New()

  // Match any route
  app.Use(func(c *fiber.Ctx) {
    fmt.Println("🥇 First handler")
    c.Next()
  })

  // Match all routes starting with /api
  app.Use("/api", func(c *fiber.Ctx) {
    fmt.Println("🥈 Second handler")
    c.Next()
  })

  // GET /api/register
  app.Get("/api/list", func(c *fiber.Ctx) {
    fmt.Println("🥉 Last handler")
    c.Send("Hello, World 👋!")
  })

  app.Listen(3000)
}

📚 Show more code examples

Views engines

📖 Settings 📖 Engines 📖 Render

Fiber defaults to the html/template when no view engine is set.

If you want to execute partials or use a different engine like amber, handlebars, mustache or pug etc..

Checkout our Template package that support multiple view engines.

import (
  "github.com/gofiber/fiber"
  "github.com/gofiber/template/pug"
)

func main() {
  // You can setup Views engine before initiation app:
  app := fiber.New(&fiber.Settings{
    Views: pug.New("./views", ".pug"),
  })

  // OR after initiation app at any convenient location:
  app.Settings.Views = pug.New("./views", ".pug"),

  // And now, you can call template `./views/home.pug` like this:
  app.Get("/", func(c *fiber.Ctx) {
    c.Render("home", fiber.Map{
      "title": "Homepage",
      "year":  1999,
    })
  })

  // ...
}

Grouping routes into chains

📖 Group

func main() {
  app := fiber.New()

  // Root API route
  api := app.Group("/api", cors())  // /api

  // API v1 routes
  v1 := api.Group("/v1", mysql())   // /api/v1
  v1.Get("/list", handler)          // /api/v1/list
  v1.Get("/user", handler)          // /api/v1/user

  // API v2 routes
  v2 := api.Group("/v2", mongodb()) // /api/v2
  v2.Get("/list", handler)          // /api/v2/list
  v2.Get("/user", handler)          // /api/v2/user

  // ...
}

Middleware logger

📖 Logger

import (
  "github.com/gofiber/fiber"
  "github.com/gofiber/fiber/middleware"
)

func main() {
  app := fiber.New()

  // Default
  app.Use(middleware.Logger())

  // Custom logging format
  app.Use(middleware.Logger("${method} - ${path}"))

  // Custom Config
  app.Use(middleware.LoggerWithConfig(middleware.LoggerConfig{
    Next: func(ctx *fiber.Ctx) bool {
      return ctx.Path() != "/private"
    },
    Format: "${method} - ${path}",
    Output: io.Writer,
  }))

  app.Listen(3000)
}

Cross-Origin Resource Sharing (CORS)

📖 CORS

import (
    "github.com/gofiber/fiber"
    "github.com/gofiber/cors"
)

func main() {
    app := fiber.New()

    // CORS with default config
    app.Use(cors.New())

    app.Listen(3000)
}

Check CORS by passing any domain in Origin header:

curl -H "Origin: http://example.com" --verbose http://localhost:3000

Custom 404 response

📖 HTTP Methods

func main() {
  app := fiber.New()

  app.Static("./public")

  app.Get("/demo", func(c *fiber.Ctx) {
    c.Send("This is a demo!")
  })

  app.Post("/register", func(c *fiber.Ctx) {
    c.Send("Welcome!")
  })

  // Last middleware to match anything
  app.Use(func(c *fiber.Ctx) {
    c.SendStatus(404)
    // => 404 "Not Found"
  })

  app.Listen(3000)
}

JSON Response

📖 JSON

type User struct {
  Name string `json:"name"`
  Age  int    `json:"age"`
}

func main() {
  app := fiber.New()

  app.Get("/user", func(c *fiber.Ctx) {
    c.JSON(&User{"John", 20})
    // => {"name":"John", "age":20}
  })

  app.Get("/json", func(c *fiber.Ctx) {
    c.JSON(fiber.Map{
      "success": true,
      "message": "Hi John!",
    })
    // => {"success":true, "message":"Hi John!"}
  })

  app.Listen(3000)
}

WebSocket Upgrade

📖 Websocket

import (
    "github.com/gofiber/fiber"
    "github.com/gofiber/websocket"
)

func main() {
  app := fiber.New()

  app.Get("/ws", websocket.New(func(c *websocket.Conn) {
    for {
      mt, msg, err := c.ReadMessage()
      if err != nil {
        log.Println("read:", err)
        break
      }
      log.Printf("recv: %s", msg)
      err = c.WriteMessage(mt, msg)
      if err != nil {
        log.Println("write:", err)
        break
      }
    }
  }))

  app.Listen(3000)
  // ws://localhost:3000/ws
}

Recover middleware

📖 Recover

import (
    "github.com/gofiber/fiber"
    "github.com/gofiber/fiber/middleware"
)

func main() {
  app := fiber.New()

  app.Use(middleware.Recover())

  app.Get("/", func(c *fiber.Ctx) {
    panic("normally this would crash your app")
  })

  app.Listen(3000)
}

🧬 Fiber Middleware

The Fiber middleware modules listed here are maintained by the Fiber team.

Middleware	Description	Built-in middleware
adaptor	Converter for net/http handlers to/from Fiber request handlers, special thanks to @arsmn!	-
basicauth	Basic auth middleware provides an HTTP basic authentication. It calls the next handler for valid credentials and 401 Unauthorized for missing or invalid credentials.	-
compress	Compression middleware for Fiber, it supports deflate, gzip and brotli by default.	middleware.Compress()
cors	Enable cross-origin resource sharing (CORS) with various options.	-
csrf	Protect from CSRF exploits.	-
filesystem	FileSystem middleware for Fiber, special thanks and credits to Alireza Salary	-
favicon	Ignore favicon from logs or serve from memory if a file path is provided.	middleware.Favicon()
helmet	Helps secure your apps by setting various HTTP headers.	-
jwt	JWT returns a JSON Web Token (JWT) auth middleware.	-
keyauth	Key auth middleware provides a key based authentication.	-
limiter	Rate-limiting middleware for Fiber. Use to limit repeated requests to public APIs and/or endpoints such as password reset.	-
logger	HTTP request/response logger.	middleware.Logger()
pprof	Special thanks to Matthew Lee (@mthli)	-
recover	Recover middleware recovers from panics anywhere in the stack chain and handles the control to the centralized ErrorHandler.	middleware.Recover()
rewrite	Rewrite middleware rewrites the URL path based on provided rules. It can be helpful for backward compatibility or just creating cleaner and more descriptive links.	-
requestid	Request ID middleware generates a unique id for a request.	middleware.RequestID()
session	This session middleware is build on top of fasthttp/session by @savsgio MIT. Special thanks to @thomasvvugt for helping with this middleware.	-
template	This package contains 8 template engines that can be used with Fiber v1.10.x Go version 1.13 or higher is required.	-
websocket	Based on Fasthttp WebSocket for Fiber with Locals support!	-

🌱 Third Party Middlewares

This is a list of middlewares that are created by the Fiber community, please create a PR if you want to see yours!

• arsmn/fiber-swagger
• arsmn/fiber-casbin
• arsmn/fiber-introspect
• shareed2k/fiber_tracing
• shareed2k/fiber_limiter
• thomasvvugt/fiber-boilerplate
• arsmn/gqlgen
• kiyonlin/fiber_limiter
• juandiii/go-jwk-security

💬 Media

• Welcome to Fiber — an Express.js styled web framework written in Go with ❤️ — 03 Feb 2020
• Fiber released v1.7! 🎉 What's new and is it still fast, flexible and friendly? — 21 Feb 2020
• 🚀 Fiber v1.8. What's new, updated and re-thinked? — 03 Mar 2020
• Is switching from Express to Fiber worth it? 🤔 — 01 Apr 2020
• Creating Fast APIs In Go Using Fiber — 07 Apr 2020
• Building a Basic REST API in Go using Fiber - 23 Apr 2020
• 📺 Building a REST API using GORM and Fiber - 25 Apr 2020
• 🌎 Create a travel list app with Go, Fiber, Angular, MongoDB and Google Cloud Secret Manager - 25 Apr 2020
• Fiber v1.9.6 🔥 How to improve performance by 817% and stay fast, flexible and friendly? - 12 May 2020
• The road to web-based authentication with Fiber ⚡ - 20 May 2020
• Building an Express-style API in Go with Fiber - 10 June 2020
• 基于golang fiber和angular开发web - 19 June 2020
• 基于延迟计算令牌桶的gofiber频率限制中间件实现 - 20 June 2020
• Construir una API en Golang con Fiber 🇪🇸 - 28 June 2020
• 📺Why Go Fiber Is THE New Framework To Learn - 29 June 2020
• 解析Gofiber路由管理 - 08 July 2020
• 📺 Introduction to Fiber - An Express-inspired web framework - 25 July 2020
• 📺 How to use the Go Fiber JWT middleware - 30 July 2020

👍 Contribute

If you want to say thank you and/or support the active development of Fiber:

1. Add a GitHub Star to the project.
2. Tweet about the project on your Twitter.
3. Write a review or tutorial on Medium, Dev.to or personal blog.
4. Help us to translate our API Documentation via Crowdin
5. Support the project by donating a cup of coffee.

☕ Supporters

Fiber is an open source project that runs on donations to pay the bills e.g. our domain name, gitbook, netlify and serverless hosting. If you want to support Fiber, you can ☕ buy a coffee here.

	User	Donation
	@destari	☕ x 10
	@dembygenesis	☕ x 5
	@thomasvvugt	☕ x 5
	@hendratommy	☕ x 5
	@ekaputra07	☕ x 5
	@jorgefuertes	☕ x 5
	@candidosales	☕ x 5
	@l0nax	☕ x 3
	@ankush	☕ x 3
	@bihe	☕ x 3
	@justdave	☕ x 3
	@koddr	☕ x 1
	@lapolinar	☕ x 1
	@diegowifi	☕ x 1
	@ssimk0	☕ x 1
	@raymayemir	☕ x 1
	@melkorm	☕ x 1
	@marvinjwendt	☕ x 1
	@toishy	☕ x 1

‎‍💻 Code Contributors

⭐️ Stargazers

⚠️ License

Copyright (c) 2019-present Fenny and Contributors. Fiber is free and open-source software licensed under the MIT License. Official logo was created by Vic Shóstak and distributed under Creative Commons license (CC BY-SA 4.0 International).

Third-party library licenses

• schema
• fasthttp
• fasttemplate
• bytebufferpool