防止某些文件夹在请求标头中附加cookie

Question

I have an application built with codeigniter and am running tests for rendering time etc, i have noticed that some certain static files have cookies attached to them which are adding unnecessary loading times. I was wondering if it was possible to prevent requests to the folder from attaching cookies to the headers. my site structure looks like this;

• application
• system
• assets
• assets/js
• assets/css
• assets/img
• profiles

I dont want requests to the assets and profiles folder to have cookies in their headers

Answer 1

If you're setting cookies at the root, you'll need a separate hostname to do this.

I wouldn't serve the CSS from a separate hostname though...

After HTML, CSS is the next most important resource on a webpage as browser can't start rendering the page until it has the CSS.

If you serve the CSS from a separate domain then there's the overhear of resolving that domain and in some browsers the overhead of TCP connection set up (Chrome, IE9 and possibly other browsers speculatively open a second TCP connection to the host the HTML came from before they know they need it)

The CSS will still have the cookie set on it but if you set a long cache time for it, the CSS should only be requested once per session.