Alternative PHP Cache, or APC, is a module for Apache servers which is used to cache the output code of script apps. It is very useful for scripts with large source code and could boost such a website up to 3 times. PHP websites are dynamic and every time a visitor accesses some page, the script hooks up to a database in order to get some content, and then the code is parsed and compiled prior to it being displayed to the site visitor. If the output code doesn't change however, that is the case with Internet sites that show identical content all of the time, these actions result in unneeded reading and writing. What APC does is that it caches the already compiled program code and delivers it every time visitors browse a website, so the database does not have to be accessed and the code doesn't need to be parsed and compiled continuously, that in turn minimizes the website loading time. The module can be very efficient for informational websites, blogs, portfolios, etcetera.