Elevate Fitness: Event-Driven Microservices
A high-performance, event-driven ecosystem consisting of 8 microservices designed to handle high-throughput workout tracking and personalized content delivery. Built with .NET 9, it leverages asynchronous messaging and distributed caching to ensure massive scalability.
System Architecture
The platform utilizes a Database-per-Service pattern to ensure complete isolation. Services communicate asynchronously through a RabbitMQ Message Broker, while Redis provides a high-performance distributed cache for session state and read-heavy workout data.
Solving the Dual Write Problem
When a user starts a workout, the system must ensure the database update and the message publication happen atomically. I implemented the Transactional Outbox Pattern to capture events within the same transaction as the workout data, effectively eliminating the Dual Write Problem.
Guaranteed Delivery
By persisting events locally first, the system survives broker downtime, automatically retrying delivery until state is consistent across all services.
Redis Caching Strategy
Optimized read-heavy workout catalogs using Redis read-through caching, reducing SQL Server round-trips by up to 80% during peak activity.