unleash.unleash/website/docs/api/internal/internal-backstage-api.md

id	title
internal	/internal-backstage/prometheus

Internal Backstage API

GET http://unleash.host.com/internal-backstage/prometheus

Unleash uses prometheus internally to collect metrics. These are available on the given url if the serverMetrics option is enabled (default=true).

Read more about Prometheus

Annotations

Unleash will automatically count all updates for all toggles under the metric name feature_toggle_update_total, and the toggle name is will be set as a label value. This information can be used to create annotations in grafana for everytime a feature toggle is changed.

You can use this query in grafana to achieve this:

delta(feature_toggle_update_total{toggle="Demo"}[1m]) != bool 0

Another useful counter is the feature_toggle_usage_total which will give you the numbers for how many times a feature toggle has been evaluated to active or not.