Fiber is an Express inspired web framework build 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)
}

⚙️ Installation

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

Installation is done using the go get command:

go get github.com/gofiber/fiber

🤖 Benchmarks

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

🎯 Features

• Robust routing
• Serve static files
• Extreme performance
• Low memory footprint
• API endpoints
• Middleware & Next support
• Rapid server-side programming
• Available in 5 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 follow 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 on Node.js (using Express or similar), then many methods and principles will seem very common to you.

👀 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 API documentation.

Routing

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

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

  // GET /john
  app.Get("/:name/:age?", func(c *fiber.Ctx) {
    fmt.Printf("Name: %s, Age: %s", c.Params("name"), c.Params("age"))
    // => Name: john, Age:
  })

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

  app.Listen(3000)
}

Serve 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 middleware")
    c.Next()
  })

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

  // POST /api/register
  app.Post("/api/register", func(c *fiber.Ctx) {
    fmt.Println("Last middleware")
    c.Send("Hello, World!")
  })

  app.Listen(3000)
}

📚 Show more code examples

Custom 404 response

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

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

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

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

  app.Listen(3000)
}

Recover from panic

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

  app.Get("/", func(c *fiber.Ctx) {
    panic("Something went wrong!")
  })

  app.Recover(func(c *fiber.Ctx) {
    c.Status(500).Send(c.Error())
    // => 500 "Something went wrong!"
  })

  app.Listen(3000)
}

💬 Media

• Welcome to Fiber — an Express.js styled web framework written in Go with ❤️ by Vic Shóstak, 03 Feb 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 this README to another language.

☕ Supporters

HenrikBinggl

Vic Shóstak

MarvinJWendt

ToishY

⭐️ Stars

⚠️ License

Fiber is free and open-source software licensed under the MIT License.