Articles like these are great perspective. Many times we read articles about servers with 400GB RAM, seven petabytes of storage, and eleven quad-core processors, but I’m most interested in maximizing performance from just about anything.
Getting 9 million hits per day on a machine with 120 megs of RAM is impressive to me. A few more details include the box being virtual, running PHP with PHP-FPM, powered by an APC cache and last but absolutely not least: nginx.
There are many more details in the article, definitely worth checking out if you’re a server geek.