http://2017.jsconf.eu/speakers/addy-o...

Venture deep into the belly of the browser to uncover the secret incantations to instantly load anything. We’ll even back it up with rock-hard data. Will we use preload, prefetch and preconnect? What about HTTP/2 Server Push? or Service Worker? and how the heck do we ship JavaScript bundles that don’t break the bank on mobile? Discover this and more tips to delight your users in the Browser Hacker’s guide to instantly loading EVERYTHING.