254-Day Hands-On System Design Series
Module 2: Scalable Log Processing | Week 5: Message Queues
Picture a busy postal sorting facility. Letters arrive constantly, and workers need to route them to different destinations based on addresses, priority levels, or content types. Your distributed log processing system faces the same challenge—millions of log entries need intelligent routing to appropriate processing pipelines.
Today, we'll implement different exchange types that act as intelligent routing engines, directing logs based on topics, sources, and severity levels. By lesson's end, you'll have a robust routing system that automatically sends database logs to analytics pipelines while routing security alerts to monitoring systems.
🎯 Learning Outcome: Build a production-ready routing system handling 1000+ messages/second with multiple exchange patterns
The Routing Challenge
Yesterday, we built reliable message processing with acknowledgments. Now we need sophisticated routing. Consider Netflix's logging infrastructure—user interaction logs go to recommendation engines, performance metrics flow to monitoring dashboards, and error logs route to debugging systems. Each requires different processing approaches.