What is Prometheus?
Prometheus 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, or you can view them on the Grafana instance below.
contentdb_packages- Total packages (counter).
contentdb_users- Number of registered users (counter).
contentdb_downloads- Total downloads (counter).
contentdb_score- Total package score (gauge).