Unless you&#x27;re using the unversioned (&quot;latest&quot;) jQuery version on your CDN, the browser cache hit rate will be way less than 95%.  I&#x27;ve seen some estimates at less than 20% (can&#x27;t find the link at the moment).<p>And for various reasons, it&#x27;s not a terribly good reason to use the &quot;latest&quot; jQuery version with no version, unless you&#x27;re prepared to deal with sudden code breakage.