https://stackoverflow.com/questions/34657222/how-to-use-server-sent-events-in-express-js https://github.com/auryn31/server-sent-event-quarkus https://www.smashingmagazine.com/2018/02/sse-websockets-data-flow-http2/ https://auth0.com/blog/developing-real-time-web-applications-with-server-sent-events/