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estatsd is a simple stats aggregation service that periodically dumps data to Graphite: http://graphite.wikidot.com/ Inspired heavily by etsy statsd: http://codeascraft.etsy.com/2011/02/15/measure-anything-measure-everything/ UPDATE COMPARED TO ORIG VERSION =============================== A udp server is added that listens a port for additional data. All data received from the UDP port, the local clients within the VM and the data about the VM itself are periodically dumped to Graphite. QUICK DEMO ========== 1) Install and configure graphite (quick-ish) 2) Install rebar, have it in your path 3) rebar compile 4) erl -pa ebin 5) > application:start(estatsd). > estatsd:increment(foo, 123). 6) Observe graphite now has 1 data point. USAGE ===== Add this app to your rebar deps, and make sure it's started somehow eg: application:start(estatsd). You can configure custom graphite host/port and flush interval using application environment vars. See estatsd_sup for details. The following calls to estatsd are all gen_server:cast, ie non-blocking. Gauges -------- estatsd:gauge(temperature, 45). %% set temperature to 45 Counters -------- estatsd:increment(num_foos). %% increment num_foos by one estatsd:decrement(<<"num_bars">>, 3). %% decrement num_bars by 3 estatsd:increment("tcp.bytes_in", 512). %% increment tcp.bytes_in by 512 Timers ------ estatsd:timing(sometask, 1534). %% report that sometask took 1534ms Or for your convenience: Start = erlang:now(), do_sometask(), estatsd:timing(sometast, Start). %% uses now() and now_diff for you NOTES ===== This could be extended to take a callback for reporting mechanisms. Right now it's hardcoded to stick data into graphite. I've been running this since May 2011 in production for irccloud. Richard Jones <email@example.com> @metabrew