Prometheus can do 800k/s on a single machine. Handling a million per second sounds perfectly plausible to me if you design it properly. The question is more how much it's going to cost you.
Wavefront doesn't publish pricing, but if we take Librato's pricing as a general indication you're talking several million dollars a month.
Wavefront doesn't publish pricing, but if we take Librato's pricing as a general indication you're talking several million dollars a month.