Translations:HHVM/16/en

MediaWiki is written in PHP, a language that is interpreted at run-time. The overhead of running this PHP code every time someone views a page necessitates the usage of caching servers, running software such as Varnish, which cache the HTML generated by running this PHP, so that the PHP does not have to run every time a page is viewed. These caches only serve users that are not logged in. Actions which are not affected by the cache, and therefore are affected by the run time of PHP code, include: Therefore, any action we can take to reduce the time it takes for MediaWiki's PHP code will therefore also decrease the loading times of our site for all of our logged in users and anyone who edits anonymously.
 * Any page you view while logged in.
 * Saving pages that you've edited, whether you are logged in or not.