Summarize the methods and techniques of golang source code deployment

With the rapid development of Internet technology, the demand for high-concurrency processing on the server side is also constantly increasing. As a fast and efficient programming language, Golang has attracted more and more attention and favor from developers in recent years. So, how to use the advantages and features of Golang for server-side deployment? This article will give some methods and techniques for deploying Golang code from the perspective of source code.

1. Golang environment setup

Before using Golang for server-side development, you need to set up the Golang development environment first. First, confirm that Golang has been installed on your computer. You can enter the following command in the command line to check whether Golang has been successfully installed:

go version

If it has been installed correctly, a command line prompt similar to the following will appear:

go version go1.13.5 darwin/amd64

This means that Golang has been installed successfully.

Next, you need to create a new Golang project locally. You can create an empty folder in the editor and create a main.go file under this folder. Then enter the following code:

package main

import "fmt"

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

The above code uses Golang's built-in fmt package to output "Hello, world!". Go into this folder on the command line and execute the following command:

go build .

This will generate an executable file in the current folder. Execute the following command to output Hello, world!:

./main

2. Use GoModules to manage dependencies

When developing with Golang, you usually need to rely on various third-party libraries. After the Go1.11 version, Golang launched a new dependency management tool GoModules. GoModules can be turned on through the following command:

go mod init [module_name]

where [module_name] is the project name. After executing this command, a go.mod file will be created in the project root directory.

Next, you can use the following command to add the required third-party library:

go get [package_name]

For example, if you need to add the gorilla/mux library, you can execute the following command:

go get github.com/gorilla/mux

This will download the gorilla/mux library locally and add a dependency on the library in the go.mod file:

module [module_name]

go 1.13

require github.com/gorilla/mux v1.7.4

You can update the dependency with the following command:

go get -u [package_name]

For example, if If you need to update the gorilla/mux library, you can execute the following command:

go get -u github.com/gorilla/mux

3. Upgrade the Golang version

When you need to upgrade the Golang version, you need to pay attention to the following points:

1 .Back up the current environment configuration: Before upgrading the Golang version, you need to back up the current environment configuration to prevent unnecessary problems.

2. Download the new version of Golang: You can download the latest version of Golang from Golang’s official website https://golang.org/dl/.

3. Execute the installation: After the download is completed, you can execute the following command to install:

sudo tar -zxvf go1.x.x.linux-amd64.tar.gz -C /usr/local/

Among them, x.x is the version number of Golang.

4. Update environment variables: After the installation is complete, you need to update Golang’s environment variables to the currently installed version. You can execute the following command to update:

export PATH=$PATH:/usr/local/go/bin

Add the above command to your .bashrc or .bash_profile file to make it permanent.

4. Deploying Golang applications

When deploying Golang applications, you need to pay attention to the following points:

1. Compile code: First, you need to compile the Golang code into executable document. You can use the following command:

go build -o [app_name]

where [app_name] is the application name.

2. Upload executable file: Upload the compiled executable file to the server.

3. Modify file permissions: You need to set execution permissions for the uploaded executable file. You can use the following command:

chmod +x [app_name]

4. Start the application: You can use the following command to start the application:

nohup ./[app_name] > [app_name].log 2>&1 &

Among them, the nohup command can make the application execute in the background; [app_name].log is the log file output by the application and can be set as needed.

5. Check the running status: Use the following command to check the running status of the application:

ps aux | grep [app_name]

If you see the following output, the application is running normally:

user 30075 0.0 0.0 101184 780 pts/0 Ss+ 15:38 0:00 /bin/bash ./[app_name]
user 30087 0.0 0.0 151856 1816 pts/0 S+ 15:38 0:00 ./[app_name]
user 30105 0.0 0.0 12728 968 pts/0 S+ 15:40 0:00 grep [app_name]

Summary

This article introduces the methods and techniques of Golang source code deployment. Through the explanation of setting up the Golang environment, using GoModules to manage dependencies, upgrading the Golang version, and deploying Golang applications, I believe that readers will have a deeper understanding of the development and deployment of Golang on the server side.

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