Attachments through CDN?

Has anyone figured out how to change the attachment URL's so they are served through a CDN?

To be more specific, a CDN, like SimpleCDN, can have 'dynamic buckets' so that any data on the server can be mirrored on the fly. with a CNAME record it can appear that it is coming from your domain.

So if I have an attachment url that is
http://site.com/attachments/forum/filename.jpg

making it

http://cdn.site.com/attachments/forum/filename.jpg

will serve the same attachment off of the CDN.

The question is how to change the url from site.com to cnd.site.com through vbseo?

Hello,

you can find "attachment prefix" in config_vbseo.php file for that:
define('VBSEO_ATTACHMENTS_PREFIX', 'http://www.domain.com/attachments/');

I have just started dabbling with CDN.. everything I read said to NOT use your main domain.

Something to do with leveraging the multi threaded way that Firefox browses - it can connect to a specific domain a limited number of times, so multi-domain CDN of static resources appears to download quicker for the viewer.

Oleg, thanks for the reply. Unfortunately changing the url to the dynamic cdn url results in a 404. I'm guessing because the CDN can't access some of the attached files (in my case you have to be a member to download attachments) I was hoping it would be that easy, but I guess not.

I just put in 'Replacement Variables':
href="http://site.com/attachments/
src="http://site.com/attachments/

and replace with the CDN domain.