Does the golang framework support hot deployment of code?

The Go framework provides a code hot deployment function that supports updating code without restarting the application. This can be accomplished by using a file system monitor to monitor code file changes. Use an HTTP endpoint to trigger a tag reload. Taking Gin Framework as an example, developers can trigger hot deployment by modifying the main.go file and saving it without restarting the application.

Hot deployment of code in the Go framework

Introduction

The Go framework provides provides a convenient and efficient way to develop and deploy web applications. One of the key features is support for hot deployment of code, which allows code to be updated without restarting the application.

How to implement code hot deployment

There are two main methods to implement code hot deployment in Go:

1. Use files System Monitor

This method involves using a file system monitor to monitor code files for changes. When a change is detected, the application will reload the updated code without restarting.

2. Using HTTP Endpoint

Some Go frameworks provide an HTTP endpoint that allows developers to trigger code reloading by sending a request. This approach allows for more precise control over the update process.

Practical case: using Gin Framework

Let us use Gin Framework to demonstrate code hot deployment:

Create a ## in the project root directory #main.go File:

package main

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

func main() {
    r := gin.Default()
    r.GET("/", func(c *gin.Context) {
        c.String(200, "Hello, World!")
    })
    r.Run() // 启动服务器
}

In a terminal, start the application using the following command:

go run main.go

The application will start running on port 8080.

Now try to modify the response message on line 10 in the

main.go file:

c.String(200, "Hello, Gin!")

After saving the file, the application will automatically reload the updated code, and No reboot required.

Conclusion

The code hot deployment feature greatly simplifies the development and deployment of Go applications. By updating code without restarting the application, developers can iterate and fix issues faster.

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