A simple comparison of Linux web server and windows web server for hosting website based on performance, resources, usability and robostness
Un-managed servers based on Apache have option to enable or disable modules accordingly. mod_expires and mod-headers are used for caching.
Guide on installing and enabling cURL in php-5 and php-4 for Linux and Windows based operating systems on Apache server.
A tutorial on adding Swap file on Ubuntu based VPS web server. Also adding swappiness to prevent out of memory crashing of website at peak