Statsd is a network daemon that runs on the Node.js platform and listens for statistics, like counters and timers, sent over UDP or TCP and sends aggregates to one or more pluggable backend services (e.g., Graphite). In StacMon statsd collects API HTTP requests metrics metrics from all StacMon components including ApiMon, EpMon, or any ClodMon plugin.
Statsd is hosted on github.