Basic Microservices Example (Node.js + Express)

This project demonstrates a simple microservices architecture using Node.js and Express. It includes three small services:

• User Service – Provides user data (3001)
• Product Service – Provides product data (3002)
• Order Service – Combines data from the other two via API calls (3003)

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🧱 Project Structure

microservices-example/
│
├── user-service.js
├── product-service.js
├── order-service.js

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🛠 Requirements

• Node.js (v14+)
• npm (Node Package Manager)

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📦 Installation

For each service:

1. Open terminal in project root
2. Install dependencies:

npm init -y
npm install express axios
Repeat this in folders if you separate services.

🚀 Running Services
Start each service in its own terminal:

bash
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# Start User Service
node user-service.js

# Start Product Service
node product-service.js

# Start Order Service
node order-service.js
🌐 API Endpoints
GET http://localhost:3001/users – Returns list of users

GET http://localhost:3002/products – Returns list of products

GET http://localhost:3003/orders – Returns one user + one product = order