Elixir is the name I see thrown around the most when it comes to stuff like this: <a href="http:&#x2F;&#x2F;www.phoenixframework.org&#x2F;blog&#x2F;the-road-to-2-million-websocket-connections" rel="nofollow">http:&#x2F;&#x2F;www.phoenixframework.org&#x2F;blog&#x2F;the-road-to-2-million-w...</a>