How to update DNS Zone for a static domain

Question

I am running this site: www.thetechnofreaks.com on Wordpress.

Recently I came across a plugin that claims to increase the page load efficiency of my site. the plugin details can be found here: http://wordpress.org/extend/plugins/w3-total-cache/installation/

Now the plugin mentions a self-hosted method for CDN which is known as pipelining. It states:

If you do not have a CDN provider, you can still improve your site's performance using the "Self-hosted" method. On your own server, create a subdomain and matching DNS Zone record; e.g. static.domain.com and configure FTP options on the "Content Delivery Network" tab accordingly. Be sure to FTP upload the appropriate files, using the available upload buttons.

Now I have created a static.thetechnofreaks.com sub-domain but I don't know how to enter matching DNS Zone record and configure FTP options.

Please guide me in this regard. I went to my cPanel -> Simple DNS Zone Editor. It contains:

Add an A Record

Name:
Address:

Add a CNAME Record

Name:
CNAME:

What am I supposed to enter in this??

Answer 1

Pipelining, or using a cookie-free subdomain to enable concurrent downloads of static/cached items (like CSS/JS) is a really good idea.

You didn't actually have to create a sub-domain to enable this approach (but there's nothing wrong about doing such), all you needed to do was create a CNAME record for static.example.com and ensure this "points" to your www.example.com, so to answer your question:

Name: static.example.com
CNAME: www.example.com

You don't need to add anything to the A Record box.

There's a few other good tips in the last link (e.g. ensuring cookies aren't accidentally set using Google Analytics, and some other WordPress specific stuff.)