The fastest request is the one that never happens. One of the biggest benefits of using hosted libraries is that browsers cache those files locally. By shari

The fastest request is the one that never happens. One of the biggest benefits of using hosted libraries is that browsers cache those files locally. By sharing the same URL for your copy of jQuery with thousands of other sites, you increase your odds of getting a local browser cache hit. For popular libraries like jQuery you're probably best using Google since they have the most adoption. That said, I think CloudFlare's CDN is an interesting idea and could grow into something genuinely useful especially for less popular libraries.