Realtime Web Apps in the Wild
summary
Covers concrete claims and tools: uses WebSockets as the preferred protocol with HTTP fallbacks and lists SignalR socket.io Faye Pusher; PHP options include Ratchet and Wrench while hosted Pusher offloads scaling. Demonstrations include a second‑screen Heroku app, Twilio SMS/call integration, Cloud9 collaborative IDE, Arduino device control and even a T‑shirt cannon; presence and 300 milliseconds delivery are cited as achievable; private channels and server-side authorization prevent client spoofing; some Heroku demos occasionally fail to spin up.
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