awesome president ama stats

[office politics]

interesting to learn that reddit is run on EC2. they added 60 servers and the site was still brought to its knees. 198,000 concurrent users at the peak is impressive.

President Obama's Reddit AMA: The Numbers Are in, and They're Huge - Yahoo! Finance

quoted:

Technical bits
In preparation for the IAMA, we initially added 30 dedicated servers (20%~ increase) just for the comment thread. This turned out not to be enough, so we added another 30 dedicated servers to the mix. At peak, we were transferring 48 MB per second of reddit to the internet. This much traffic overwhelmed our load balancers which caused a lot of the slowness you probably experienced on reddit. This IAMA gave us a lot of information on what we need to do next not only to handle the next megathread on reddit, but also to make reddit faster in general. We're going to redesign our load balancer system to be more flexible under this kind of load, and we've got a bunch of things we need to do to make our code more efficient for giant comment threads. Both of these improvements should make day-to-day reddit use faster as well.