Go User API (Standard Library)

A simple REST API built using Go standard library (net/http) with in-memory storage.
This project is made for learning backend development in Go step-by-step.

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✅ Features

• Health check endpoint
• Create user (POST)
• List users (GET)
• Get user by ID (GET)
• Update user by ID (PUT)
• Delete user by ID (DELETE)

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📁 Folder Structure

go-user-api/
├── handler/
├── model/
├── store/
├── main.go
├── go.mod
└── README.md

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🚀 Run Locally

1) Start the server

go run main.go

Server runs on: http://localhost:8080

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🧪 API Testing (curl.exe)

✅ Health Check

curl.exe http://localhost:8080/health

Expected response: OK

✅ Create User (POST /users)

curl.exe -X POST http://localhost:8080/users -H "Content-Type: application/json" -d "{\"name\":\"Tejas\",\"email\":\"t@gmail.com\"}"

Expected response: {"id":1,"name":"Tejas","email":"t@gmail.com"}

✅ List Users (GET /users)

curl.exe http://localhost:8080/users

Expected response: [{"id":1,"name":"Tejas","email":"t@gmail.com"}]

✅ Get User By ID (GET /users/{id})

curl.exe http://localhost:8080/users/1

Expected response: {"id":1,"name":"Tejas","email":"t@gmail.com"}

✅ Update User (PUT /users/{id})

curl.exe -X PUT http://localhost:8080/users/1 -H "Content-Type: application/json" -d "{\"name\":\"Updated Name\",\"email\":\"updated@gmail.com\"}"

Expected response: {"id":1,"name":"Updated Name","email":"updated@gmail.com"}

✅ Delete User (DELETE /users/{id})

curl.exe -X DELETE http://localhost:8080/users/1

Expected response: User deleted successfully