Replacing HTML5 Server Sent Events

In anticipation of the Learn Eleventy From Scratch course, and for my first project after completion of the course.
When migrating a site with LEMP stack, to a static site built with 11ty, is it possible to replace the HTML5 Server Sent Events ?
If yes, with what ?
If yes, is this touched upon in the course (just trying my luck with this one :partying_face:) ?

I read “Working with and rendering remote data” on the course page and keep my hopes up.

Some background. At the time I used this article to code the Server Sent Events : HTML5Rocks : Stream Updates with Server-Sent Events

I believe that this is what I’m looking for :