e perceived performance is to use content placeholders in place of real-content
which gives the impression that the site has almost loaded and only requires a few moments more for the latest live data to be slotted in.</p>
<p>As an example here's what YouTube content placeholders mimicking the page layout looks like before the real site has loaded:</p>
<p><img src="https://raw.githubusercontent.com/ServiceStack/docs/master/docs/images/jamstack/youtube-placeholder.png" alt="" /></p>
<p>But we can do even