How to build a golang server on Linux

Golang is a programming language developed by Google. It is characterized by simplicity, efficiency and reliability. In recent years, Golang has become increasingly popular in web development because of its very good performance and concurrency operation capabilities. In this article, we will introduce how to build a Golang server on a Linux server and briefly understand the characteristics of Golang.

1. Preliminary knowledge

Before you start, you need knowledge of Linux server, Golang environment and basic command line operations. For mainland China environment, it is recommended to use the Go language package manager Goenv of the Golang Chinese community, address: https://github.com/syndbg/goenv.

2. Golang server setup

1. Install the Golang environment

In the Linux system, we can run the following command Install Golang.

sudo apt update
sudo apt install golang

2. Create a simple Golang HTTP server

Start writing a simple Golang HTTP server in your Linux system. This server will listen on port 8080, and when a request comes in, it will return a simple "Hello world" message.

package main

import (
    "fmt"
    "net/http"
)

func handler(w http.ResponseWriter, r *http.Request) {
    fmt.Fprintf(w, "Hello world")
}

func main() {
    http.HandleFunc("/", handler)
    http.ListenAndServe(":8080", nil)
}

In this program, we define a function named handler and register it as an HTTP request processing function. When a request arrives, it calls this function to handle the request. In our example, it simply writes the "Hello world" string to the response body and completes the request.

Now, we need to compile and run our program. Assuming our program is stored in a file called example.go, we can compile the program using the following command.

go build example.go

This will generate an executable file named example. Now, just run this executable to start our HTTP server.

./example

Now, our HTTP server is listening on port 8080 and waiting for requests. Open a web browser, enter http://localhost:8080 in the address bar, and press Enter. You will see the "Hello world" string returned.

3. Conclusion

This article briefly introduces how to build a simple Golang HTTP server on a Linux server. Although we only wrote a very simple program, this laid the foundation for building more powerful web applications using Golang in a production environment. Golang has excellent performance and concurrent operation capabilities, which makes it excellent when handling high-traffic web requests. I hope this article can help you learn Golang and build your own Golang HTTP server.

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