Revisiting Action Cable for notifications, 6 years later

[ekohl]

First reaction when I saw the title: yes please.

@jeremylenz

It seems the approach I took just happens to address the criticism at that time about being too generic (mine is limited to notifications only), but I’m also not sure what else has changed about our infrastructure since 2020. I don’t think we use passenger any more, for one.

This is indeed the big change. We now only support Puma and I think it should work.