| commit | b36854774c27b1c6a5a321b7b86d41053891cfd3 | [log] [tgz] |
|---|---|---|
| author | Benjamin Anderson <b@banjiewen.net> | Fri Oct 31 13:06:36 2014 -0700 |
| committer | Benjamin Anderson <b@banjiewen.net> | Fri Oct 31 13:06:36 2014 -0700 |
| tree | 4e8250e88090de4472d722099685b2767d7fe532 | |
| parent | a7c74f880dbacc15f19d2c7ac202559a72ea9a7d [diff] |
Log notifications for missing metrics
couch_stats is a simple statistics collection app for Erlang applications. Its core API is a thin wrapper around a stat storage library (currently Folsom,) but abstracting over that library provides several benefits:
All references to stat storage are in one place, so it's easy to swap the module out.
Some common patterns, such as tying a process's lifetime to a counter value, are straightforward to support.
Configuration can be managed in a single place - for example, it's much easier to ensure that all histogram metrics use a 10-second sliding window if those metrics are instantiated/configured centrally.
[atom()].counter, gauge, or histogram.If you don‘t add your metric to a description file, your metric will be accessible via couch_stats:sample/1, but it won’t be read by the stats collector and therefore won't be available to HTTP _stats requests, etc.
Tell couch_stats to use your description file via application configuration.
Instrument your code with the helper functions in couch_stats.erl.