Performance
================================

InterMine web-applications rely on a server to deliver static files such as JavaScript and CSS. The default location for this server is "http://cdn.intermine.org". Installing your own CDN may increase web site performance.

Setting up your own Content Delivery Network
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

This dependency is easy to remove. You can host all these files yourself from any location.
We recommend doing the following:

* Cloning your own copy of the  `CDN <http://github.com/intermine/CDN>`_ This means you have local copies of all the files.
* Making the root directory of your checkout visible through a web-server (an Apache 'alias' directive is sufficient). These resources should be accessible through CORS enabled web-servers - see: http://enable-cors.org
* Change the value of the 'head.cdn.location' property in your web-app. This is currently configured in 'global.web.properties' as `head.cdn.location = http://cdn.intermine.org`
* Supply the location of your CDN at runtime to JavaScript components that may use it: Set the option "CDN.server" to the
  appropriate URL (see http://intermine.readthedocs.org/en/latest/webapp/properties/javascript-options/)


.. index:: webapp speed, performance, CDN, Content Delivery Network