WARNING: This project is DISCONTINUED. There are other tools which serve similar purpose as for example graphite, statsd, batsd, etc.
SimpleMetrics makes it easy to collect and aggregate data (specifically counters, timers and events).
It is heavily inspired by Statsd (https://github.com/etsy/statsd) from Etsy. Read the "Measure Anything, measure Everything" blog post (http://codeascraft.etsy.com/2011/02/15/measure-anything-measure-everything/) which did it for me.
Technically speaking it provides a simple UDP interface to send data to an Eventmachine based UDP Server. The data is stored in MongoDB using a Round Robin Database (RRD) scheme.
SimpleMetrics is written in Ruby and packaged as a gem.
The current version is considered ALPHA.
We provide a simple commandline wrapper using daemons gem (http://daemons.rubyforge.org/).
Start Server as background daemon:
Start in foreground:
simple_metrics_server start -t
Round Robin Database Principles in MongoDB
We use 4 collections in MongoDB each with more coarse timestamp buckets:
- 10 sec
- 1 min
- 10 min
- 1 day
The 10sec and 1min collections are capped collections and have a fixed size. The others will store the data as long as there is sufficient disc space.
How can we map these times to graphs?
- 10 sec, near real-time graph (ttl: several hours)
- 1 min, last hour (ttl: several days)
- 10 min, whole day view (ttl: forever)
- 1 day , week view (ttl: forever)
(The MIT License)
Copyright (c) 2012 Frederik Dietz email@example.com
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The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
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