I'm using Mesos in production. TL;DR - if you have less than 1000 machines, don't even think about Mesos. They don't care about you (you don't give them enough

I'm using Mesos in production. TL;DR - if you have less than 1000 machines, don't even think about Mesos. They don't care about you (you don't give them enough money, which they are really short of), and their system uses strategies that are effective only when you have a large number of machines.