In this article, we’ll take you on a quick tour of the new Lua event framework shipped with HAProxy 2.8—plus demonstrate how Lua helps you further customize HAProxy’s behavior. We’ll start with a brief, high-level overview of Lua and how HAProxy uses it. Next, we’ll introduce you to the Lua event framework, show you what you can do with it, and familiarize you with its mechanics.

HTTP/3 is the latest generation of the HTTP protocol, and its ability to serve applications over QUIC offers several advantages for user experience, including reduced latency, improved reliability, and faster page loading as a result of fixing the head-of-line blocking issue in previous versions of HTTP. Both HAProxy and HAProxy Enterprise offer support for using HTTP/3 over QUIC, although the steps for enabling QUIC in HAProxy and HAProxy Enterprise are different.