This is a good article, albeit a bit long-winded. In my experience, whether or not WS can be beneficial essentially comes down to whether or not you truly need

This is a good article, albeit a bit long-winded. In my experience, whether or not WS can be beneficial essentially comes down to whether or not you truly need low latency duplex communication. A chat application, which seems to be the canonical WS example, probably doesn't; a twitch-style multiplayer game, probably does. Server-sent events are a great tool for streaming server-to-client data where other more specific media types (i.e. audio/video) doesn't fit the bill.