This chimes a lot with my experience. Although I think SSEs are brilliant if the stack I’m using supports Websockets I would probably default to them even for a

This chimes a lot with my experience. Although I think SSEs are brilliant if the stack I’m using supports Websockets I would probably default to them even for a simple event stream now. To add to your list of problems, I have had memory leaks with SSE responses stuck open on the server even when the client disconnects. Resorted to killing the response on the server every couple of minutes and relying on the client reconnecting.