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 effective for scripts with large source code and can accelerate such an Internet site as much as three times. PHP sites are dynamic and any time a user opens a page, the script links to a database in order to get some content, then the code is parsed and compiled prior to it being shown to the guest. In case the output code does not change however, that is the case with sites that display the same content at all times, these actions trigger unneeded reading and writing. What APC does is that it caches the already compiled code and delivers it each time visitors browse a website, so the database does not have to be accessed and the code does not have to be parsed and compiled again and again, which in turn minimizes the site loading time. The module can be really helpful for informational websites, blogs, portfolios, etcetera.