There has been lots of talk of ZeroMQ as a message transport in hook.io, it's coming soon.
IMO, you shouldn't be worried about messages per second between devices right now. You should be worried about how you are going to communicate between 1000s of 3rd party services. hook.io aims to solve that problem.
hook.io is all about building the software for connecting devices together to do functionality like this. It would be amazing to see this coupled with actual custom hardware.
hook.io supports multi-transport messaging protocols.
There has been lots of talk of ZeroMQ as a message transport in hook.io, it's coming soon.
IMO, you shouldn't be worried about messages per second between devices right now. You should be worried about how you are going to communicate between 1000s of 3rd party services. hook.io aims to solve that problem.