rewrite rule to send all static content to CDN?

[Joe Shang]

With Apache we can do this using:

RewriteCond %{HTTP_USER_AGENT} !^CDN_USER_AGENT$   [NC]
RewriteRule .*\.(jpg|gif|png|flv|css|js|swf)$
http://cdn-domain-name/$0   [R=301,L]

But we want our CDN to serve our static content, what would be easier
to accomplish this?

I tried:

rewrite ^/*\.(jpg|gif|png|flv|css|js|swf)$
http://http.cdnlayer.com/contentfolder$1 last;

But it didn't work.

Should I be using a location instead?

        location ~* ^.+.(jpg|jpeg|gif|css|png|js|ico)$ {
              access_log        off;
            expires           30d;
        }

Like the above ones? but how would the rewrite portion come into play?

Thanks!

Joe