Baylus.com » CDN http://www.baylus.com Asa Baylus is a Website Designer working in Washington DC Thu, 29 Dec 2011 19:00:57 +0000 en hourly 1 http://wordpress.org/?v=3.1.2 Load YUI-CSS from the Google Ajax Library http://www.baylus.com/load-yui-css-from-the-google-ajax-library/ http://www.baylus.com/load-yui-css-from-the-google-ajax-library/#comments Mon, 07 Dec 2009 14:21:58 +0000 admin http://www.baylus.com/?p=322 I’m using Google CDN to load my Ajax libraries specifically jQuery and jQuery UI. Its been working great but I’m often annoyed that I have to load Yahoo!’s YUI-CSS files from the yahoo CDN. However I recently found that I did not need to do this. Google also maintains the YUI-CSS files which can be accessed using the following URL:

http://ajax.googleapis.com/ajax/libs/yui/2.8.0r4/build/reset-fonts-grids/reset-fonts-grids.css

which is equivalent to:

http://yui.yahooapis.com/2.8.0r4/build/reset-fonts-grids/reset-fonts-grids.css

Since DNS lookups are cached, keeping the number of domains to a minimum gives you a small performance boost.

“The Domain Name System (DNS) maps hostnames to IP addresses, just as phonebooks map people’s names to their phone numbers. When you type www.yahoo.com into your browser, a DNS resolver contacted by the browser returns that server’s IP address. DNS has a cost. It typically takes 20-120 milliseconds for DNS to lookup the IP address for a given hostname. The browser can’t download anything from this hostname until the DNS lookup is completed.”

Read more at Yahoo!

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