Dynamic Mobile Apps with WebSockets and MQTT

IMO, this is a great deck for IBM (better than many of the tech presentations by companies pitching for enterprise business):

(a) Showing interesting non-proprietary technology, which everyone can play with;

(b) Well thought out demos, which even point out limitations, and work-arounds (xyz views for the game);

(c) the 'IBM takeaway' that actually points out the corporate use-cases obliquely, without ramming that pitch into everyone's face at the start.

Also the Internet of Things portal from Eclipse mighht be interesting. It shows other brokers and client libraries http://iot.eclipse.org/

I think I might go with mosquitto and see how many simultaneuous connections are possibke on ine machine. Otherwise RabbitMQ with MQTT support might be an option. mosquitto ajd RabbitMQ can cluster brokers, which you might need to scale out.

I can see the benefit over WebSockets since it establishes a schema/API for sending/receiving messages. However, I'm not seeing the benefit over server-sent events along with AJAX POSTs for any data you want to submit. And both work over regular ports (80/443), whereas it looks like MQTT is out-of-band.

I've just recently discovered the power of MQTT. I think it's the best thing ever. I even decided to use MQTT as a way to interface apps/devices using SMS. Check it out at http://www.smscmd.net/