The latest articles on DEV Community by Reda (@reda_b15a77e13e7a300bfa7d). https://dev.to/reda_b15a77e13e7a300bfa7d https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F3271440%2F21c00fe3-9565-42ec-ae10-5fc0bd755224.png https://dev.to/reda_b15a77e13e7a300bfa7d en Reda Tue, 24 Jun 2025 12:12:20 +0000 https://dev.to/reda_b15a77e13e7a300bfa7d/expensetracker-a-net-8-microservices-poc-with-event-sourcing-rabbitmq-and-kong-gateway-10nm https://dev.to/reda_b15a77e13e7a300bfa7d/expensetracker-a-net-8-microservices-poc-with-event-sourcing-rabbitmq-and-kong-gateway-10nm <p>Hey devs! 👋</p> <p>I’ve been working on a <strong>proof of concept</strong> for a microservices-based <strong>expense tracking app</strong> to experiment with modern architectural patterns in .NET 8. Thought I’d share it here in case it helps others or sparks some discussion.</p> <h3> 🔧 Tech Stack </h3> <ul> <li> <strong>.NET 8</strong>, C#</li> <li> <strong>Marten</strong> for event sourcing (PostgreSQL as event store)</li> <li> <strong>Wolverine</strong> for messaging and CQRS</li> <li> <strong>RabbitMQ</strong> for async communication</li> <li> <strong>Kong Gateway</strong> for routing and API gateway management</li> <li> <strong>Redis</strong>, Docker Compose, and Testcontainers for integration testing</li> </ul> <h3> ⚙️ Features </h3> <ul> <li>Clean Architecture &amp; DDD structure</li> <li> <p>Two main services:</p> <ul> <li> <code>ExpenseService</code> handles commands like deposit/withdraw</li> <li> <code>AuditService</code> listens to events and builds projections</li> </ul> </li> <li><p>Full local environment with Docker</p></li> <li><p>Swagger UIs for each service</p></li> <li><p>Health checks, testing setup, and more</p></li> </ul> <h3> 📦 GitHub Link </h3> <p>🔗 <a href="https://github.com/aekoky/ExpenseTracker" rel="noopener noreferrer">https://github.com/aekoky/ExpenseTracker</a></p> <p>It’s a POC (not production-ready), but should be a useful reference if you're exploring:</p> <ul> <li>Event-driven systems</li> <li>CQRS/Event Sourcing in .NET</li> <li>Service communication with RabbitMQ and Wolverine</li> <li>Setting up integration tests with Testcontainers</li> </ul> <p>Would love feedback or questions — happy to dig into implementation details!</p> dotnet backend eventdriven microservices