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routes_test.go routes_test.go
test_helpers.go test_helpers.go
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Gin Web Framework
📰 Gin 1.12.0 is now available!
We're excited to announce the release of Gin 1.12.0! This release brings new features, performance improvements, and important bug fixes. Check out the release announcement on our official blog for the full details.
Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices where speed and developer productivity are essential.
Why choose Gin?
Gin combines the simplicity of Express.js-style routing with Go's performance characteristics, making it ideal for:
* Building high-throughput REST APIs
* Developing microservices that need to handle many concurrent requests
* Creating web applications that require fast response times
* Prototyping web services quickly with minimal boilerplate
Gin's key features:
* Zero allocation router - Extremely memory-efficient routing with no heap allocations
* High performance - Benchmarks show superior speed compared to other Go web frameworks
* Middleware support - Extensible middleware system for authentication, logging, CORS, etc.
* Crash-free - Built-in recovery middleware prevents panics from crashing your server
* JSON validation - Automatic request/response JSON binding and validation
* Route grouping - Organize related routes and apply common middleware
* Error management - Centralized error handling and logging
* Built-in rendering - Support for JSON, XML, HTML templates, and more
* Extensible - Large ecosystem of community middleware and plugins
Getting Started
Prerequisites
* Go version: Gin requires Go version 1.25 or above
* Basic Go knowledge: Familiarity with Go syntax and package management is helpful
Installation
With Go's module support, simply import Gin in your code and Go will automatically fetch it during build:
import "github.com/gin-gonic/gin"
Your First Gin Application
Here's a complete example that demonstrates Gin's simplicity:
package main
import (
"log"
"net/http"
"github.com/gin-gonic/gin"
)
func main() {
// Create a Gin router with default middleware (logger and recovery)
r := gin.Default()
// Define a simple GET endpoint
r.GET("/ping", func(c *gin.Context) {
// Return JSON response
c.JSON(http.StatusOK, gin.H{
"message": "pong",
})
})
// Start server on port 8080 (default)
// Server will listen on 0.0.0.0:8080 (localhost:8080 on Windows)
if err := r.Run(); err != nil {
log.Fatalf("failed to run server: %v", err)
}
}
Running the application:
1. Save the code above as main.go
2. Run the application:
go run main.go
3. Open your browser and visit http://localhost:8080/ping
4. You should see: {"message":"pong"}
What this example demonstrates:
* Creating a Gin router with default middleware
* Defining HTTP endpoints with simple handler functions
* Returning JSON responses
* Starting an HTTP server
Next Steps
After running your first Gin application, explore these resources to learn more:
📚 Learning Resources
* Gin Quick Start Guide - Comprehensive tutorial with API examples and build configurations
* Example Repository - Ready-to-run examples demonstrating various Gin use cases:
+ REST API development
+ Authentication & middleware
+ File uploads and downloads
+ WebSocket connections
+ Template rendering
📖 Documentation
API Reference
* Go.dev API Documentation - Complete API reference with examples
User Guides
The comprehensive documentation is available on gin-gonic.com in multiple languages:
* English | 简体中文 | 繁體中文
* 日本語 | 한국어 | Español
* Turkish | Persian | Português
* Russian | Indonesian
Official Tutorials
* Go.dev Tutorial: Developing a RESTful API with Go and Gin
⚡ Performance Benchmarks
Gin demonstrates exceptional performance compared to other Go web frameworks. It uses a custom version of HttpRouter for maximum efficiency. View detailed benchmarks →
Gin vs. Other Go Frameworks (GitHub API routing benchmark):
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 Ecosystem
Gin has a rich ecosystem of middleware for common web development needs. Explore community-contributed middleware:
* gin-contrib - Official middleware collection including:
+ Authentication (JWT, Basic Auth, Sessions)
+ CORS, Rate limiting, Compression
+ Logging, Metrics, Tracing
+ Static file serving, Template engines
* gin-gonic/contrib - Additional community middleware
🏢 Production Usage
Gin powers many high-traffic applications and services in production:
* gorush - High-performance push notification server
* fnproject - Container-native, serverless platform
* photoprism - AI-powered personal photo management
* lura - Ultra-performant API Gateway framework
* picfit - Real-time image processing server
* dkron - Distributed job scheduling system
🤝 Contributing
Gin is the work of hundreds of contributors from around the world. We welcome and appreciate your contributions! See the full list of contributors.
How to Contribute
* 🐛 Report bugs - Help us identify and fix issues
* 💡 Suggest features - Share your ideas for improvements
* 📝 Improve documentation - Help make our docs clearer
* 🔧 Submit code - Fix bugs or implement new features
* 🧪 Write tests - Improve our test coverage
Getting Started with Contributing
1. Check out our CONTRIBUTING.md for detailed guidelines
2. Join our community discussions and ask questions
All contributions are valued and help make Gin better for everyone!
About
Gin is a high-performance HTTP web framework written in Go. It provides a Martini-like API but with significantly better performance—up to 40 times faster—thanks to httprouter. Gin is designed for building REST APIs, web applications, and microservices.
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