Event-Driven Order Service

Minimal event-driven architecture demo.
Shows the Order → Event → Payment → Result → Order flow using Outbox & Inbox patterns.

Run

Docker and Docker Compose must be installed.

git clone https://github.com/cemkdev/event-driven-order-service.git
cd event-driven-order-service
docker compose up -d

Swagger: http://localhost:8080/swagger

API

POST /api/orders

{
  "amount": 100
}

Sending this request starts the order creation and payment simulation flow.

Architecture

Architecture Notes

• OrderService uses the Outbox pattern to persist events before publishing
• BackgroundServices handle event publishing and consuming
• PaymentService uses Redis Inbox pattern for idempotency
• RabbitMQ access is wrapped with a lightweight abstraction layer

Tech Stack

• ASP.NET Core (.NET 9)
• EF Core + SQL Server
• RabbitMQ
• Redis
• Outbox & Inbox patterns
• BackgroundService consumers
• Docker & Docker Compose