Rewriting URL's conditionally for CDN Origin Pull

[jp2112]

Personally if I knew this was something that I needed on a long-term basis I would do this in .htaccess rather than using a Genesis or WP hook. In theory it should be much faster at the server level.

You could put something like this into your .htaccess file:

RewriteEngine On
RewriteRule ^wp-content/uploads/(.*)$ http://cdn.olicity.com/wp-content/uploads/$1

This would rewrite any request for a file in your local wp-content/uploads folder to the corresponding CDN folder. Tested with http://htaccess.madewithlove.be/

If you only wanted to pull specific files from your CDN, you could do something like this:

RewriteEngine On
RewriteCond %{REQUEST_URI} (.*)\.css$ [NC]
RewriteRule ^(.*)$ http://cdn.olicity.com/$1

For example, you could set up a directory tree that mirrored your WP setup and copy only the .css files to those folders. The .css files would come from your CDN while the other files would still be served from your local WP install.