golang deployment requires nginx

In modern Internet application development, using Golang as a back-end language has become more and more popular. As a language with superior performance, security and reliability, Golang is widely used in cloud computing, API servers, message queues and other directions. However, Golang is different from other languages ​​in that it does not have a built-in web server, so it needs to be deployed through a third-party web server. Among many web servers, Nginx is the most suitable choice as a Golang server.

This article will delve into why Nginx is needed in Golang deployment and introduce how to use Nginx to deploy Golang applications.

1. Why do you need Nginx?

1.1 Excellent performance

Golang is known for its efficient performance, but as a language without a built-in web server, Golang applications cannot be directly deployed to the cloud. Nginx is known for its excellent performance and can handle a large number of requests and concurrent connections, making this server software the first choice for high-performance applications.

At the same time, Nginx provides many advanced functions such as reverse proxy, load balancing, and caching, which can be used to handle traffic forwarding in Golang applications and improve application performance and reliability.

1.2 High Security

Nginx has many advanced security features, such as SSL/TLS encryption and protection against malicious DDoS attacks. Since Golang itself does not have a built-in security mechanism, using Nginx can better protect Golang applications and improve application security.

1.3 Highly scalable

When Golang applications become more and more popular and the number of servers needs to be temporarily increased, horizontal expansion can be easily achieved using Nginx. One way is to add more backend servers to improve the performance and scalability of the entire application. At the same time, Nginx can also use built-in load balancing tools to manage multiple servers.

2. How to use Nginx to deploy Golang applications?

2.1 Install Golang

Before deploying a Golang application, Golang must be installed first. Install Golang using the following command:

$ sudo apt-get update
$ sudo apt-get install golang-go

2.2 Writing and Building Golang Applications

Before writing a Golang application, you need to know some basic knowledge. Golang applications need to write a main function, as well as other required files and functions. Golang code files usually end with .go.

Here is a sample Golang application:

package main

import "fmt"

func main() {
    fmt.Println("Hello, World!")
}

In order to build a Golang application, you need to use the following command:

$ go build -o main

Running this command will compile the code into an executable file.

2.3 Use Nginx reverse proxy

Use Nginx reverse proxy to host applications on the Internet. In order to use a reverse proxy, you need to edit the Nginx configuration file /etc/nginx/sites-available/default.

Add the following content to the file:

server {
    listen 80;
    server_name example.com;

    location / {
        proxy_pass http://127.0.0.1:8080;
        proxy_http_version 1.1;
        proxy_set_header Upgrade $http_upgrade;
        proxy_set_header Connection 'upgrade';
        proxy_set_header Host $host;
        proxy_cache_bypass $http_upgrade;
    }
}

The above code adds a separate virtual host to the Nginx configuration file that forwards requests to port 8080 of the Golang application. Other content in this code includes HTTP version, protocol upgrade request headers, and other related proxy settings.

2.4 Run Golang application

Use the following command to run the Golang application:

$ ./main

This command will start the Golang application on port 8080 of the local host.

2.5 Restart Nginx

After editing the Nginx configuration file, you need to restart the Nginx server for the changes to take effect. Restart the Nginx service using the following command:

$ sudo systemctl reload nginx

After running this command, Nginx will restart with the new configuration file.

3. Summary

Golang is an efficient and safe language, but due to the lack of a built-in web server, it is essential to use Nginx as the server for Golang applications. Nginx not only provides reverse proxy, advanced load balancing, caching and many other excellent functions, but Nginx's own performance, security and scalability are also very suitable for deploying Golang applications.

Using the methods mentioned in this article, you can easily use Nginx to deploy Golang applications and achieve more efficient, secure, and reliable applications.

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