Erlang stats aggregation app that periodically flushes data to graphite
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README.txt

README.txt

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 <rj@metabrew.com>
@metabrew