🛒 Distributed Order Processing System

A production-grade microservices project built with Go, Kafka, Cassandra, Envoy Proxy, and Kubernetes.
This project simulates a real-world e-commerce order processing system with event-driven architecture, horizontal scalability, and fault tolerance.

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🚀 Overview

This project demonstrates how large-scale companies design scalable, resilient, and maintainable backends.
It processes orders asynchronously, integrates multiple microservices, and uses a message queue to decouple services for better performance.

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🏗 Architecture

[ React Frontend ]
       |
       v
[ Envoy Proxy (API Gateway) ]
       |
+----------------------------+
|  Order Service (Go)        | ---> Kafka ---> Payment Service (Go)
|  - Create/Cancel Orders    |                  - Process payments
|  - Update Status           |                  - Publish payment result
|                            |
|----------------------------|
| Cassandra DB (Order Data)  |
+----------------------------+

Inventory Service (Go) <-- Kafka <-- Order & Payment Events
- Deducts stock
- Updates inventory status

All services run in Docker containers and are orchestrated with Kubernetes.