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estatsd is a simple stats aggregation service that periodically dumps data to Graphite: http://graphite.wikidot.com/ NB: Graphite is good, despite the website being a bit ghetto. Inspired heavily by etsy statsd: http://codeascraft.etsy.com/2011/02/15/measure-anything-measure-everything/ 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