We also use Riemann in prod and love it. It is pretty much the perfect switchboard/aggregator for stat streams. It's only part of the stack, but it's great for

We also use Riemann in prod and love it. It is pretty much the perfect switchboard/aggregator for stat streams. It's only part of the stack, but it's great for routing some stats to this TSDB and other stats to that TSDB. It's also great for detecting anomalies and sending updates to wherever you want them to go. For us, this happens in 150 lines of clojure plus 150 lines of unit tests. I know that's fairly meaningless without knowing more about our system -- but the point is, it's very expressive so you get a lot done in a few lines of code. And therefore, don't worry too much about it being clojure.