Ebay architecture scalability

At SD Forum 2006, Randy Shoup and Dan Pritchett, both with eBay, gave a presentation on eBay’s architecture. Pritchett subsequently posted his presentation slides in his blog, The eBay Architecture. Predictably, the presentation contained a few inspiring statistics, such as: 15,000 application instances running in eight data centers 212,000,000 registered users 1 billion page views per day 26 billion SQL queries and updates per day Over 2 petabytes of data $1,590 worth of goods traded per second Over 1 billion photos 7 languages 99.94% uptime

Other stats in the presentation related to development process and features, such as:

"According to the presentation, the goal of eBay’s current architecture is to handle an additional ten-fold increase in traffic, something eBay expects to reach within a few short years. Another architecture objective is to be able to handle peak loads, and for components to gracefully degrade under unusual load or in the case of system failures." read more  HERE