NGINX + PHP-FPM + APC = Awesome
http://interfacelab.com/nginx-php-fpm-apc-awesome
"The following guide will walk you through setting up possibly the fastest way to serve PHP known to man. If there is a faster way, I’ve not yet found it climbing through zillions of blog posts out there on the subject. In this article, we’ll be installing nginx http server, PHP with the PHP-FPM patches, as well as APC. The end result? Pure awesome."
Displaying PHP APC Cache Information
http://www.electrictoolbox.com/apc-php-cache-information
"APC is the Alternative PHP Cache, which is a free, open, and robust framework for caching and optimizing PHP intermediate code. I posted about how to install APC on Linux a couple of days ago, and will now look at the apc.php script which comes with APC and shows information about how much of the cache is being used, what files are being cached, the number of times they've been accessed etc."