Looking for something to read over lunch today? Bone up on HTTP2 - it’s coming soon to an internet near you.
What’s the tl;dr? 
It’s way more efficient and therefore much faster.
Here’s a writeup in FAQ form: https://http2.github.io/faq/
If your browser supports http2, here are 2 demos:
https://http2.akamai.com/demo
and
https://http2.golang.org/gophertiles?latency=0