>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #1046222. --> Reported by: [vacilando](https://www.drupal.org/user/45996) >>> <p>Paraphrasing @Wim Leers:</p> <blockquote><p>Please note though that you should ensure no cookies are sent to the CDN &mdash; this would slow down HTTP requests to the CDN. You can do this through two ways:<br> 1) When you are using cookies that are bound to your www subdomain only (i.e. not an example.org, but on <a href="http://www.example.org">www.example.org</a>), you can safely use another subdomain for your CDN.<br> 2) When you are using cookies on your main domain, you'll have to use a completely different domain for the CDN if you don't want cookies to be sent, so then you should use the distribution URL &mdash; but then you should indeed be careful to avoid JS issues.</p> <p>Drupal 7 no longer sets cookies for anonymous users. To achieve this in D6, you can use the "<a href="http://drupal.org/project/no_anon">No Anonymous Sessions</a>" module by @kbahey. If you just use the distribution URL, all cookie issues are avoided automatically.</p></blockquote> <p>This is important, so I recommend including this text, or any adaptation of it, in README.txt.</p>