Gin - First Application

Gin simplifies the process of building high-performance web applications with Golang. In this guide, we’ll walk through creating your first Gin application step by step.

🌟 Prerequisites

📋 Before starting, ensure you have the following:

• 🔧 Golang 1.17+ installed
• 🗍 A text editor or IDE (e.g., Visual Studio Code, GoLand, or Vim)

🛠️ Step 1: Set Up Your Gin Project

You can set up your first Gin project by following these steps:

1. Initialize a Go Module

mkdir gin-first-app
cd gin-first-app
go mod init gin-first-app

1. Install Gin

go get -u github.com/gin-gonic/gin

📖 Step 2: Writing Your First Endpoint

Let’s write a simple endpoint to say hello:

Create a file named main.go with the following content:

package main

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

func main() {
	r := gin.Default()

	r.GET("/hello", func(c *gin.Context) {
		c.JSON(200, gin.H{
			"message": "Hello, Gin!",
		})
	})

	r.Run() // Listen and serve on 0.0.0.0:8080
}

▶️ Step 3: Run the Application

1. Open a terminal in the project folder.
2. Execute the following command to run your application:

go run main.go

1. Access the endpoint at:

   http://localhost:8080/hello
   

Response:

{
  "message": "Hello, Gin!"
}

This post covers the basics of creating a Gin project, writing an endpoint, and running it successfully.