[marceldegraaf]

We're using MQTT extensively at Karma [1] as the communication protocol between our LTE devices and our backend services. It has worked really well for us, and we're super happy that we chose for MQTT in favour of our previous HTTP/JSON stack.

We're about to release a very detailed blog post about our MQTT setup on our blog [2], describing why and how we implemented our own MQTT server and how we hooked that up to our Ruby backend services and Redis. The post should be live somewhere this week.

1: https://yourkarma.com 2: https://blog.yourkarma.com/

[mdaniel]

To save you the trouble of searching for it, this is the more relevant link:

https://blog.yourkarma.com/engineering-for-growth