How to deploy and compile Go applications online

As a programming language launched by Google, Go has higher concurrency performance, better memory management, and easier expansion than other programming languages. Therefore, more and more companies are adopting Go language to develop applications. However, deploying Go applications is not an easy task, especially in an online environment. This article explains how to deploy and compile Go applications online.

1. Compiling Go applications

The Go language can be compiled on any platform. Before compiling the application, we need to know the target platform and target architecture of the application. The target platform is usually the operating system, and the target architecture is usually the hardware type (such as 32-bit or 64-bit).

For example, if we want to compile a Go application on a Linux 64-bit platform, we can use the following command:

GOOS=linux GOARCH=amd64 go build main.go

Where GOOS represents the target operating system and GOARCH represents the target architecture. If we want to compile this program on Windows 32-bit platform, we can use the following command:

GOOS=windows GOARCH=386 go build main.go

2. Deploy Go application

Before we start deploying the Go application, we The environment and deployment method of the target server need to be determined. The most common deployment method is to deploy the application as a standalone binary and place it on the server. This method has high flexibility and portability.

Here are the steps to deploy a Go application:

In the first step, upload the application binary to the server. This can be done using the scp or sftp command:

scp main user@server:/path/to/app

The second step is to create a systemd service unit file on the target server. This ensures that the application starts automatically when the server starts and stays running during the run. The following is a simple sample service unit file:

[Unit]
Description=My Go app
After=network.target

[Service]
User=user
Group=user
ExecStart=/path/to/app/main
Restart=on-failure

[Install]
WantedBy=multi-user.target

The third step is to reload systemd and start the application:

systemctl daemon-reload
systemctl start my-go-app

The above steps can ensure that the application starts automatically when the server starts, and Stay running while running. If any errors occur, you can view the application's log files for troubleshooting.

3. Summary

In this article, we introduced how to deploy and compile Go applications in an online environment. By using the correct environment variables, applications can be easily compiled under different platforms. Using systemd service unit files ensures that your application starts automatically when the server starts and stays running during the run. These steps ensure that the application runs stably in a production environment.

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