Alternative PHP Cache, or APC, is a module for Apache servers which is employed to cache the output code of script apps. It is very efficient for scripts with large source code and will speed up such a site as much as 3 times. PHP sites are dynamic and each time a visitor accesses a page, the script connects to a database to retrieve some content, then the code is parsed and compiled before it's shown to the guest. In case the output code doesn't change however, that is the case with sites that display the very same content at all times, these actions trigger unneeded reading and writing. What APC does is that it caches the already compiled program code and delivers it every time visitors browse an Internet site, so the database doesn't have to be accessed and the program code doesn't need to be parsed and compiled again and again, that consequently minimizes the Internet site loading time. The module could be quite helpful for informational Internet sites, blogs, portfolios, and many others.