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.
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)
}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/fiberThese tests are performed by TechEmpower and Go Web. If you want to see all results, please visit our Wiki.
- 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 12 other languages
- And much more, explore Fiber
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 (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.
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)
}📖 Static
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()
})
// GET /api/register
app.Get("/api/list", func(c *fiber.Ctx) {
fmt.Println("Last middleware")
c.Send("Hello, World!")
})
app.Listen(3000)
}📚 Show more code examples
📖 Settings
📖 Render
📖 Template
Fiber supports the default Go template engine
But if you want to use another template engine like amber, handlebars, mustache or pug.
You can use our Template Middleware.
package main
import (
"github.com/gofiber/fiber"
"github.com/gofiber/template"
)
func main() {
// You can setup template engine before initiation app:
app := fiber.New(&fiber.Settings{
TemplateEngine: template.Mustache(),
TemplateFolder: "./views",
TemplateExtension: ".tmpl",
})
// OR after initiation app at any convenient location:
app.Settings.TemplateEngine = template.Mustache()
app.Settings.TemplateFolder = "./views"
app.Settings.TemplateExtension = ".tmpl"
// And now, you can call template `./views/home.tmpl` like this:
app.Get("/", func(c *fiber.Ctx) {
c.Render("home", fiber.Map{
"title": "Homepage",
"year": 1999,
})
})
// ...
}📖 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
// ...
}📖 Logger
import (
"github.com/gofiber/fiber"
"github.com/gofiber/logger"
)
func main() {
app := fiber.New()
// Optional logger config
config := logger.Config{
Format: "${time} - ${method} ${path}\n",
TimeFormat: "Mon, 2 Jan 2006 15:04:05 MST",
}
// Logger with config
app.Use(logger.New(config))
app.Listen(3000)
}📖 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:3000func 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
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)
}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
import (
"github.com/gofiber/fiber"
"github.com/gofiber/recover"
)
func main() {
app := fiber.New()
// Optional recover config
config := recover.Config{
Handler: func(c *fiber.Ctx, err error) {
c.SendString(err.Error())
c.SendStatus(500)
},
}
// Logger with custom config
app.Use(recover.New(config))
app.Listen(3000)
}For easier and more clear work, we've put middleware into separate repositories:
- Basic Authentication
- Key Authentication
- Compression
- Request ID
- WebSocket
- Rewrite
- Recover
- Limiter
- Session
- Logger
- Helmet
- Embed
- PPROF
- CORS
- CSRF
- JWT
- 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
If you want to say thank you and/or support the active development of Fiber:
- Add a GitHub Star to the project.
- Tweet about the project on your Twitter.
- Write a review or tutorial on Medium, Dev.to or personal blog.
- Help us to translate our API Documentation via Crowdin
- Support the project by donating a cup of coffee.
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 | |
|---|---|---|
| @thomasvvugt | ☕ x 5 | |
| @ekaputra07 | ☕ x 5 | |
| @bihe | ☕ x 3 | |
| @justdave | ☕ x 3 | |
| @koddr | ☕ x 1 | |
| @raymayemir | ☕ x 1 | |
| @melkorm | ☕ x 1 | |
| @marvinjwendt | ☕ x 1 | |
| @toishy | ☕ x 1 |
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