title: Prometheus Metrics

## What is Prometheus?

[Prometheus](https://prometheus.io) is an "open-source monitoring system with a
dimensional data model, flexible query language, efficient time series database
and modern alerting approach".

Prometheus Metrics can be accessed at [/metrics](/metrics).

## Metrics

* `contentdb_packages` - Total packages (counter).
* `contentdb_users` - Number of registered users (counter).
* `contentdb_downloads` - Total downloads (counter).
* `contentdb_score` - Total package score (gauge).
