HTTPS just got faster and safer thanks to the release of TLS 1.3 by IETF (RFC 8446) in August 2018. TLS 1.3 is now the latest version of the TLS protocol. This tutorial will be showing you how to enable TLS 1.3 in Nginx web server on Ubuntu 18.04 and Ubuntu 16.04.
Performance-wise, TLS 1.2 needs two round trips to establish HTTPS connection. With TLS 1.3, only one round trip is required. TLS 1.3 also supports zero round trip mode (0-RTT session resumption), allowing clients who have previously connected to your website to send HTTP request on the first message to the server. This makes a big difference for users on mobile networks or at far distant locations.
Read full tutorial here: https://www.linuxbabe.com/ubuntu/enable-tls1-3-nginx-ubuntu-18-04-16-04