Unless you're using the unversioned ("latest") jQuery version on your CDN, the browser cache hit rate will be way less than 95%. I've seen some estimates at le

Unless you're using the unversioned ("latest") jQuery version on your CDN, the browser cache hit rate will be way less than 95%. I've seen some estimates at less than 20% (can't find the link at the moment). And for various reasons, it's not a terribly good reason to use the "latest" jQuery version with no version, unless you're prepared to deal with sudden code breakage.