The raspberrywebserver.com is running on this Raspberry Pi Cluster Web Server. Visit the site to see all of the details so you can build your own. Steve figures that a 20 Raspberry Pi cluster would be equivalent to a PC server so it isn’t as powerful as a full blown server but it feels very fast and responsive when I tried it!
Via: HG Comments
“Clusters can be used as web servers. Many web sites get too much traffic to run on a single server, so several servers have to be used. Requests from web browsers are received by a node called a load balancer, which forwards requests to worker servers. The load balancer then forwards responses from servers back to the clients.
This site is now hosted on a Raspberry Pi cluster. The worker nodes are standard web servers that contain identical content. I just installed Apache on them and copied my site to each node.”