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Fiber

Fiber ist ein von Expressjs inspiriertes Web-Framework, aufgebaut auf Fasthttp - die schnellste HTTP engine für Go. Kreiert, um Dinge zu vereinfachen, für schnelle Entwicklung mit keinen Speicherzuweisungen und Performance im Hinterkopf.

⚡️ Schnellstart

package main

import "github.com/gofiber/fiber/v2"

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

    app.Get("/", func(c *fiber.Ctx) error {
        return c.SendString("Hallo, Welt 👋!")
    })

    app.Listen(":3000")
}

🤖 Benchmarks

Diese Tests wurden von TechEmpower und Go Web ausgeführt. Falls du alle Resultate sehen möchtest, besuche bitte unser Wiki.

⚙️ Installation

Stelle sicher, dass du Go installiert hast (Download hier). Version 1.14 oder neuer wird zu der Nutzung Fibers benötigt.

Erstelle ein neues Project, indem du zunächst einen neuen Ordner erstellst und dort in diesem Ordner go mod init github.com/dein/repo ausführst (hier mehr dazu). Daraufhin kannst du Fiber mit dem go get Kommandozeilenbefehl installieren:

go get -u github.com/gofiber/fiber/v2

🎯 Eigenschaften

💡 Philosophie

Neue Gopher, welche von Node.js zu Go umsteigen, müssen eine Lernkurve durchlaufen, bevor sie ihre Webanwendungen oder Microservices erstellen können. Fiber als Web-Framework, wurde mit der Idee von Minimalismus erschaffen und folgt dem UNIX Weg, damit neue Gophers mit einem herzlichen und vertrauenswürdigen Willkommen schnell in der Welt von Go durchstarten können.

Fiber ist inspiriert von Express.js, dem beliebtesten Web-Framework im Internet. Wir haben die Leichtigkeit von Express und die Rohleistung von Go kombiniert. Wenn du jemals eine Webanwendung mit Node.js implementiert hast (mit Express.js oder ähnlichem), werden dir viele Methoden und Prinzipien sehr vertraut vorkommen.

⚠️ Limitations

  • Due to Fiber's usage of unsafe, the library may not always be compatible with the latest Go version. Fiber 2.29.0 has been tested with Go versions 1.14 to 1.19.
  • Fiber is not compatible with net/http interfaces. This means you will not be able to use projects like gqlgen, go-swagger, or any others which are part of the net/http ecosystem.

👀 Beispiele

Nachfolgend sind einige der gängigsten Beispiele aufgeführt. Wenn du weitere Codebeispiele sehen möchtest, besuche bitte unser "Recipes Repository" oder besuche unsere API Dokumentation.

📖 Basic Routing

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

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

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

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

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

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

    log.Fatal(app.Listen(":3000"))
}

📖 Route Naming

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

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

    data, _ := json.MarshalIndent(app.GetRoute("api"), "", "  ")
    fmt.Print(string(data))
    // Prints:
    // {
    //    "method": "GET",
    //    "name": "api",
    //    "path": "/api/*",
    //    "params": [
    //      "*1"
    //    ]
    // }


    log.Fatal(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

    log.Fatal(app.Listen(":3000"))
}

📖 Middleware & Next

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

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

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

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

	log.Fatal(app.Listen(":3000"))
}
📚 Show more code examples

Views engines

📖 Config 📖 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.

package main

import (
    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/template/pug"
)

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

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

    log.Fatal(app.Listen(":3000"))
}

Grouping routes into chains

📖 Group

func middleware(c *fiber.Ctx) error {
    fmt.Println("Don't mind me!")
    return c.Next()
}

func handler(c *fiber.Ctx) error {
    return c.SendString(c.Path())
}

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

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

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

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

    // ...
}

Middleware logger

📖 Logger

package main

import (
    "log"

    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/logger"
)

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

    app.Use(logger.New())

    // ...

    log.Fatal(app.Listen(":3000"))
}

Cross-Origin Resource Sharing (CORS)

📖 CORS

import (
    "log"

    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/cors"
)

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

    app.Use(cors.New())

    // ...

    log.Fatal(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) error {
        return c.SendString("This is a demo!")
    })

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

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

    log.Fatal(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) error {
        return c.JSON(&User{"John", 20})
        // => {"name":"John", "age":20}
    })

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

    log.Fatal(app.Listen(":3000"))
}

WebSocket Upgrade

📖 Websocket

import (
    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/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
      }
    }
  }))

  log.Fatal(app.Listen(":3000"))
  // ws://localhost:3000/ws
}

Server-Sent Events

📖 More Info

import (
    "github.com/gofiber/fiber/v2"
    "github.com/valyala/fasthttp"
)

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

  app.Get("/sse", func(c *fiber.Ctx) error {
    c.Set("Content-Type", "text/event-stream")
    c.Set("Cache-Control", "no-cache")
    c.Set("Connection", "keep-alive")
    c.Set("Transfer-Encoding", "chunked")

    c.Context().SetBodyStreamWriter(fasthttp.StreamWriter(func(w *bufio.Writer) {
      fmt.Println("WRITER")
      var i int
      
      for {
        i++
        msg := fmt.Sprintf("%d - the time is %v", i, time.Now())
        fmt.Fprintf(w, "data: Message: %s\n\n", msg)
        fmt.Println(msg)

        w.Flush()
        time.Sleep(5 * time.Second)
      }
    }))

    return nil
  })

  log.Fatal(app.Listen(":3000"))
}

Recover middleware

📖 Recover

import (
    "github.com/gofiber/fiber/v2"
    "github.com/gofiber/fiber/v2/middleware/recover"
)

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

    app.Use(recover.New())

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

    log.Fatal(app.Listen(":3000"))
}

🧬 Internal Middleware

Hier finden Sie eine Liste der Middleware, die im Fiber-Framework enthalten ist.

Middleware Description
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.
cache Intercept and cache responses
compress Compression middleware for Fiber, it supports deflate, gzip and brotli by default.
cors Enable cross-origin resource sharing (CORS) with various options.
csrf Protect from CSRF exploits.
encryptcookie Encrypt middleware which encrypts cookie values.
envvar Expose environment variables with providing an optional config.
etag ETag middleware that lets caches be more efficient and save bandwidth, as a web server does not need to resend a full response if the content has not changed.
expvar Expvar middleware that serves via its HTTP server runtime exposed variants in the JSON format.
favicon Ignore favicon from logs or serve from memory if a file path is provided.
filesystem FileSystem middleware for Fiber, special thanks and credits to Alireza Salary
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.
monitor Monitor middleware that reports server metrics, inspired by express-status-monitor
pprof Special thanks to Matthew Lee (@mthli)
proxy Allows you to proxy requests to a multiple servers
recover Recover middleware recovers from panics anywhere in the stack chain and handles the control to the centralized ErrorHandler.
requestid Adds a requestid to every request.
session Session middleware. NOTE: This middleware uses our Storage package.
skip Skip middleware that skips a wrapped handler is a predicate is true.
timeout Adds a max time for a request and forwards to ErrorHandler if it is exceeded.

🧬 External Middleware

Liste der extern gehosteten Middleware-Module, die vom Fiber team gepflegt werden.

Middleware Description
adaptor Converter for net/http handlers to/from Fiber request handlers, special thanks to @arsmn!
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.
redirect Redirect middleware
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.
storage Premade storage drivers that implement the Storage interface, designed to be used with various Fiber middlewares.
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!

🕶️ Awesome List

Weitere Artikel, Middlewares, Beispiele oder Tools finden Sie in unserer awesome list.

👍 Mitwirken

Falls du danke sagen möchtest und/oder aktiv die Entwicklung von fiber fördern möchtest:

  1. Füge dem Projekt einen GitHub Stern hinzu.
  2. Twittere über das Projekt auf deinem Twitter.
  3. Schreibe eine Rezension auf Medium, Dev.to oder einem persönlichem Blog.
  4. Unterstütze das Projekt, indem du uns einen Kaffee kaufst.

Supporters

Fiber ist ein Open-Source-Projekt, dass durch Spenden finanziert wird und welches auch seine Ausgaben (Domain, Hosting) durch Spenden deckt. Wenn du Fiber unterstützen möchtest, kannst du uns hier einen Kaffee kaufen .

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
@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

Code Contributors

⭐️ Stargazers

Stargazers over time

⚠️ 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 MIT licenses