CDN

Description

This module provides easy Content Delivery Network integration for Drupal sites. It alters file URLs, so that files are downloaded from a CDN instead of your web server.

It provides two modes: "Origin Pull" and "File Conveyor".

1. In Origin Pull mode, only "Origin Pull" CDNs are supported. (These are CDNs that only require you to replace the domain name with another domain name.)
2. In File Conveyor mode, this module integrates with File Conveyor, which allows for much more advanced setups (e.g. optimize images, transcode videos, and so on, before syncing to the CDN).

Note: It is essential that you understand the key properties of a CDN, most importantly the differences between an Origin Pull CDN and a Push CDN. A good (and compact!) reference is the “Key Properties of a CDN” article.

The CDN module aims to do only one thing and do it well: altering URLs to point to files on CDNs.
It does as much as possible to make CDN integration frictionless & performant:

• Any sort of CDN mapping! (>=2.0)
• optimal Far Future expiration (>=2.2)
  • CORS (>=2.3)
  • signed URLs prevent abuse/DoS attacks (>=2.3)
  • disabled by default, automatically disabled when in maintenance mode (>=2.4)
  • requires a CDN or reverse proxy, not Apache/nginx/lighttpd/…!
• Advanced Help integration to guide you (>=2.2)
• DNS prefetching (>=2.3)
• CSS aggregation (>=2.4)
• auto-balance files over multiple CDNs (>=2.5)
• … and many more details that are taken care of automatically!

Planned: localStorage & app cache, .htaccess rules generator for Far Future expiration, CDN & SEO.

Live sites

• Comic Relief
• economist.com
• World Press Photo
• South Africa's Parliament

History

Version 1 of this module (for Drupal 6) was written as part of the bachelor thesis of Wim Leers at Hasselt University.

Downloads