Event-Driven Order Management System

A prototype of an event-driven order management system built with Spring Boot and Kafka.

Tech Stack

Architecture

This system is built using a microservice architecture. Each service operates independently and communicates asynchronously using Kafka events.

Key Services

1. API Gateway

• Role: Routes client requests to the appropriate services and manages authentication and authorization.
• Status: Under development.

2. Order Service

• Role: Handles order creation, retrieval, and cancellation.
• Description: Upon order creation, it publishes events to Kafka for the Inventory Service and Payment Service.

3. Inventory Service

• Role: Manages inventory operations.
• Description: Checks stock availability and updates stock levels based on order creation events received from the Order Service.

4. Payment Service

• Role: Processes payments.
• Description: Listens for payment request events from the Order Service, processes payments, and sends the result back to the Order Service.
• Status: Under development.

5. Shipping Service

• Role: Handles shipping operations.
• Description: Receives shipping request events from the Order Service to manage deliveries.
• Status: Under development.

Transaction Management

The system implements SAGA Pattern using a Choreography-based approach. Each service listens to Kafka events and completes its part of the transaction. In case of a failure, compensating actions are triggered to maintain system consistency.

Notes

• Planning to add an API Gateway for JWT.
• and integrate a basic frontend for login and order management.
• and payment and Shipping services to be implemented soon.