Alternative PHP Cache, or APC, is a module for Apache servers which is employed to cache the output code of script applications. It is very effective for scripts with large source code and will boost such a website as much as three times. PHP websites are dynamic and any time a website visitor opens a page, the script links to a database to get some content, then the code is parsed and compiled prior to it being shown to the guest. If the output code doesn't change however, that's the case with Internet sites that show the exact same content all the time, such actions trigger unneeded reading and writing. What APC does is that it caches the previously compiled code and delivers it each time visitors browse an Internet site, so the database does not have to be accessed and the code does not need to be parsed and compiled over and over again, which consequently lowers the website loading time. The module could be quite helpful for informational Internet sites, blogs, portfolios, and many others.