Scaling Facebook Live Feed for the Inauguration

What this post added

This post details the engineering challenges and solutions for scaling the Facebook Live Feed during the 2009 Presidential Inauguration. It highlights strategies for handling millions of concurrent users and high request rates, including dynamic generation of 'Friends' feeds, aggressive caching of 'Everyone' feeds using memcache and CDNs, and the development of numerous 'levers' for capacity management. The post also emphasizes the importance of extensive load testing and 'dark launches' to ensure stability during the critical event.