Camunda with reactive Angular UI

Hey I plan to create a new angular app as UI with camunda-SpringBoot as backend.

In my old JS app I refreshed a processoverview every X seconds and redraw all data if needed.
With the new UI I would like to redraw the UI only if the processoverview changed and I wonder what the best approach would be here.

First, I thought that I can have a look into webflux to subscribe and publish, but as I read in the forum, this is not possible with SpringBoot.
Other technologies I read is to use websockets or serverSendEvents. For that I think about hook into the lifecycle via parselistener and trigger server-events on server side, but I am not sure if this would work.

Did anyone of you were able to create a (reactive) UI where the client gets informed server side.

Best Regards
Alex