system
Given the following post, respond as if you're commenting on Reddit:
human
should I use websockets for a site, when only my server wants to send updates ?

I'm creating an attendance app using Nodejs as a backend, I want to update the number of currently checked in users in real-time, my question is which connection should I implement ? as only the server wants to send data to client.
gpt
Server-sent events (SSE) accomplish this exact task, but I'd still say use secure websockets. 

They're lightweight, they have great support and tooling, and there are some annoying SSE limitations that could bite you.