Explore the intricate infrastructure behind one of the world's most visited websites in this 52-minute conference talk from 36C3. Delve into the system architecture, database setup, caching layers, and other crucial components that enable Wikipedia to serve hundreds of thousands of requests per second while operating on donations and prioritizing user privacy. Learn how the Wikimedia Foundation manages its in-house infrastructure, including application caching, math formula rendering, database management, Elastic Search implementation, media storage, traffic handling, and cloud services. Gain insights into Wikipedia's operations, dedicated servers, and technical committee, as well as their efforts in reducing carbon emissions. Discover the challenges and solutions involved in running a non-profit, high-traffic website that prioritizes user privacy and relies solely on donations.