Http/3
Introduction
This is a page for the new HTTP/3.
Overview
Not an expert but have read [1]. I guess what I took from it was that it will be more pluggable and not tied to propriety implmentation of TCP. This may enable faster progress on improving the protocol going forward.
Nginx
This is not detailed but here is what I had to do. At the time I was on ubuntu 21.04 and using 1.21.4. Mostly I followed the instructions on here