Serving Facebook Multifeed: Efficiency, performance gains through redesign

This post introduces the concept of 'disaggregation' as a strategy for optimizing data center infrastructure and improving efficiency and performance. It details how this concept was applied to redesign the Multifeed system, separating the CPU-intensive Aggregator component from the memory-intensive Leaf component. This disaggregation led to significant improvements in hardware utilization, scalability, performance (10% latency reduction), and reliability, with a notable 40% efficiency improvement in memory and CPU consumption. The post also highlights the potential for disaggregation in other services like Search and Operational Analytics.