gin/README.md

Gin Web Framework

Gin is a web framework written in Go. It features a martini-like API with performance that is up to 40 times faster thanks to httprouter. If you need performance and good productivity, you will love Gin.

Gin's key features are:

• Zero allocation router
• Speed
• Middleware support
• Crash-free
• JSON validation
• Route grouping
• Error management
• Built-in rendering
• Extensible

Getting started

Prerequisites

Gin requires Go version 1.21 or above.

Getting Gin

With Go's module support, go [build|run|test] automatically fetches the necessary dependencies when you add the import in your code:

import "github.com/gin-gonic/gin"

Alternatively, use go get:

go get -u github.com/gin-gonic/gin

Running Gin

A basic example:

package main

import (
  "net/http"

  "github.com/gin-gonic/gin"
)

func main() {
  r := gin.Default()
  r.GET("/ping", func(c *gin.Context) {
    c.JSON(http.StatusOK, gin.H{
      "message": "pong",
    })
  })
  r.Run() // listen and serve on 0.0.0.0:8080 (for windows "localhost:8080")
}

To run the code, use the go run command, like:

$ go run example.go

Then visit 0.0.0.0:8080/ping in your browser to see the response!

See more examples

Quick Start

Learn and practice with the Gin Quick Start, which includes API examples and builds tag.

Examples

A number of ready-to-run examples demonstrating various use cases of Gin are available in the Gin examples repository.

Documentation

See the API documentation on go.dev.

The documentation is also available on gin-gonic.com in several languages:

• English
• 简体中文
• 繁體中文
• 日本語
• Español
• 한국어
• Turkish
• Persian

Articles

• Tutorial: Developing a RESTful API with Go and Gin

Benchmarks

Gin uses a custom version of HttpRouter, see all benchmarks.

Benchmark name	(1)	(2)	(3)	(4)
BenchmarkGin_GithubAll	43550	27364 ns/op	0 B/op	0 allocs/op
BenchmarkAce_GithubAll	40543	29670 ns/op	0 B/op	0 allocs/op
BenchmarkAero_GithubAll	57632	20648 ns/op	0 B/op	0 allocs/op
BenchmarkBear_GithubAll	9234	216179 ns/op	86448 B/op	943 allocs/op
BenchmarkBeego_GithubAll	7407	243496 ns/op	71456 B/op	609 allocs/op
BenchmarkBone_GithubAll	420	2922835 ns/op	720160 B/op	8620 allocs/op
BenchmarkChi_GithubAll	7620	238331 ns/op	87696 B/op	609 allocs/op
BenchmarkDenco_GithubAll	18355	64494 ns/op	20224 B/op	167 allocs/op
BenchmarkEcho_GithubAll	31251	38479 ns/op	0 B/op	0 allocs/op
BenchmarkGocraftWeb_GithubAll	4117	300062 ns/op	131656 B/op	1686 allocs/op
BenchmarkGoji_GithubAll	3274	416158 ns/op	56112 B/op	334 allocs/op
BenchmarkGojiv2_GithubAll	1402	870518 ns/op	352720 B/op	4321 allocs/op
BenchmarkGoJsonRest_GithubAll	2976	401507 ns/op	134371 B/op	2737 allocs/op
BenchmarkGoRestful_GithubAll	410	2913158 ns/op	910144 B/op	2938 allocs/op
BenchmarkGorillaMux_GithubAll	346	3384987 ns/op	251650 B/op	1994 allocs/op
BenchmarkGowwwRouter_GithubAll	10000	143025 ns/op	72144 B/op	501 allocs/op
BenchmarkHttpRouter_GithubAll	55938	21360 ns/op	0 B/op	0 allocs/op
BenchmarkHttpTreeMux_GithubAll	10000	153944 ns/op	65856 B/op	671 allocs/op
BenchmarkKocha_GithubAll	10000	106315 ns/op	23304 B/op	843 allocs/op
BenchmarkLARS_GithubAll	47779	25084 ns/op	0 B/op	0 allocs/op
BenchmarkMacaron_GithubAll	3266	371907 ns/op	149409 B/op	1624 allocs/op
BenchmarkMartini_GithubAll	331	3444706 ns/op	226551 B/op	2325 allocs/op
BenchmarkPat_GithubAll	273	4381818 ns/op	1483152 B/op	26963 allocs/op
BenchmarkPossum_GithubAll	10000	164367 ns/op	84448 B/op	609 allocs/op
BenchmarkR2router_GithubAll	10000	160220 ns/op	77328 B/op	979 allocs/op
BenchmarkRivet_GithubAll	14625	82453 ns/op	16272 B/op	167 allocs/op
BenchmarkTango_GithubAll	6255	279611 ns/op	63826 B/op	1618 allocs/op
BenchmarkTigerTonic_GithubAll	2008	687874 ns/op	193856 B/op	4474 allocs/op
BenchmarkTraffic_GithubAll	355	3478508 ns/op	820744 B/op	14114 allocs/op
BenchmarkVulcan_GithubAll	6885	193333 ns/op	19894 B/op	609 allocs/op

• (1): Total Repetitions achieved in constant time, higher means more confident result
• (2): Single Repetition Duration (ns/op), lower is better
• (3): Heap Memory (B/op), lower is better
• (4): Average Allocations per Repetition (allocs/op), lower is better

Middleware

You can find many useful Gin middlewares at gin-contrib.

Uses

Here are some awesome projects that are using the Gin web framework.

• gorush: A push notification server.
• fnproject: A container native, cloud agnostic serverless platform.
• photoprism: Personal photo management powered by Google TensorFlow.
• lura: Ultra performant API Gateway with middleware.
• picfit: An image resizing server.
• dkron: Distributed, fault tolerant job scheduling system.

Contributing

Gin is the work of hundreds of contributors. We appreciate your help!

Please see CONTRIBUTING.md for details on submitting patches and the contribution workflow.