🚀 Microservices Architecture with GraphQL, Kafka, Redis, and Docker

📌 Project Overview

This project consists of four microservices:

1. GraphQL Gateway - Unified API for all microservices.
2. User Service - Manages authentication, user registration, and login.
3. Order Service - Handles order creation, processing, and Kafka events.
4. Product Service - Manages products and stock updates.

Architecture

✅ Technologies Used

• Node.js - Backend framework for each microservice.
• GraphQL - API gateway to communicate with all services.
• Kafka - Message broker for event-driven communication.
• Redis - Caching layer for performance optimization.
• MongoDB - NoSQL database for storing users, orders, and products.
• Docker & Docker Compose - Containerized environment.

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📌 Microservices Overview

Service	Port	Functionality
GraphQL Gateway	7000	Unifies all APIs for communication.
User Service	8000	Manages authentication and user data.
Order Service	8001	Handles order processing and stock validation via Kafka.
Product Service	8002	Manages product inventory, integrates with Kafka for stock updates.
Kafka	9092	Message broker for inter-service communication.
Redis	6379	Caching layer for faster performance.
MongoDB	27017	Database for all microservices.

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📌 Setup & Installation

1️⃣ Clone the Repository

git clone https://github.com/your-repo/microservices-app.git
cd microservices-app

Build the project and run

docker compose up --build