The jQuery Team recently shared that they will be disabling all hotlinking to the jQuery library hosted on their servers at the end of January 2011.
This means that if you’re web project currently includes the jQuery library from the jQuery.com servers, all of your site’s JavaScript-based behavior that is dependent upon jQuery is going to stop working.
Lately, we have noticed a significant increase in traffic from sites that hotlink directly to files on our various properties (jquery.com, jqueryui.com, dev.jquery.com, etc.) instead of downloading and hosting them locally or taking advantage of the CDNs that we and others (Google, Microsoft, etc.) provide for this purpose. This behavior has started to negatively affect the performance of our network and is preventing legitimate users from accessing our site at peak times.
Personally I’m surprised that in a day where the library is only 26KB and is hosted on a variety of different delivery networks, developers are still pulling their version of jQuery from the project’s site.
If you find that one of your project’s is currently pulling its resources from the jQuery.com domain, check out ScriptSrc, the Google Hosted libraries, or simply host the library yourself.
You can read the full article from the jQuery team here.
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