golang framework custom debugger

The Go framework custom debugger provides powerful features for debugging large Go applications: Monitor and debug concurrent Goroutines Check memory status and resource leaks Explore the internal structure of the Go framework

Go Framework Custom Debugger

When debugging large Go applications, the standard debugger may not be enough. Custom debuggers can provide more powerful features, such as:

• Monitor and debug concurrent Goroutines
• Check memory status and resource leaks
• Explore the internals of the Go framework Structure

Practical example: Debugging the Gin framework

As an example, let's create a custom debugger to debug the Gin framework.

import (
    "fmt"
    "github.com/gin-gonic/gin"
)

// LoggerMiddleware 是一个 Gin 中间件，用于记录请求信息。
func LoggerMiddleware(c *gin.Context) {
    fmt.Println("Received request:", c.Request.Method, c.Request.URL.Path)

    // 继续处理请求
    c.Next()
}

Creating a custom debugger

We create a custom debugger that integrates with net/http/pprof.

import (
    "net/http/pprof"
)

func CreateDebugger(router *gin.Engine) {
    // 添加 pprof 路由
    router.GET("/debug/pprof/", pprof.Index)
    router.GET("/debug/pprof/cmdline", pprof.Cmdline)
    router.GET("/debug/pprof/profile", pprof.Profile)

    // 应用 LoggerMiddleware，以便在每条请求上记录信息
    router.Use(LoggerMiddleware)
}

Run the application

func main() {
    router := gin.New()
    CreateDebugger(router)

    router.Use(gin.Recovery())
    router.Run(":8080")
}

Use the debugger

Open your browser and navigate to http:// /localhost:8080/debug/pprof/. This will display a page containing various debugging functions.

• CPU Profiling: Analyze the CPU usage of your application.
• Memory Profiling: Analyze the memory usage of the application.
• Goroutine Anatomy: Monitor Goroutines in an application.

Through these features, you can gain insight into the behavior of your application, discover performance bottlenecks and debug issues.

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