Alternative PHP Cache, or APC, is a module for Apache web servers that is employed to cache the output code of script apps. It is very efficient for scripts with large source code and could boost such an Internet site up to three times. PHP websites are dynamic and each time a visitor opens a page, the script connects to a database to get some content, then the code is parsed and compiled before it is shown to the site visitor. In case the output code does not change however, that is the case with sites which show the exact same content all of the time, such actions trigger unnecessary reading and writing. What APC does is that it caches the previously compiled code and delivers it whenever visitors browse an Internet site, so the database doesn't have to be accessed and the program code doesn't have to be parsed and compiled continuously, that in turn lowers the website loading time. The module could be very effective for informational Internet sites, blogs, portfolios, and so on.