doc/stats.adoc

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== Statistics

Etherpad keeps track of the goings-on inside the edit machinery. If you'd like to have a look at this, just point your browser to `/stats`.

We currently measure:

 - totalUsers (counter)
 - connects (meter)
 - disconnects (meter)
 - pendingEdits (counter)
 - edits (timer)
 - failedChangesets (meter)
 - httpRequests (timer)
 - http500 (meter)
 - memoryUsage (gauge)

Under the hood, we are happy to rely on https://github.com/felixge/node-measured[measured] for all our metrics needs.

To modify or simply access our stats in your plugin, simply `require('ep_etherpad-lite/stats')` which is a https://yaorg.github.io/node-measured/packages/measured-core/Collection.html[`measured.Collection`].


=== Prometheus scraper

Besides the non standard `/stats` endpoint, Etherpad also exposes a `/stats/prometheus` endpoint which is compatible with Prometheus scraping. It includes a lot more metrics than the standard `/stats` endpoint. It contains the following metrics:

- ueberdb stats
- gc
- memory
- event loop lag
- v8
- and more