1. Observability


Flipt developers rely on anonymous usage data to help prioritize new features and improve the product. The information collected is completely anonymous, never shared with external entities, and you can opt-out at any time.

What Kind of Data is Collected?

  • Flipt version

You can view the full schema of the telemetry data on GitHub.

We use Segment to collect the data. Only the creator of Flipt has access to the data.

How to Disable Telemetry

There are multiple ways in which you can disable telemetry collection:

Configuration File

  telemetry_enabled: false

Environment Variable



Flipt exposes Prometheus metrics at the /metrics HTTP endpoint. To see which metrics are currently supported, point your browser to FLIPT_HOST/metrics (ex: localhost:8080/metrics).

You should see a bunch of metrics being recorded such as:

flipt_cache_hit_total{cache="memory",type="flag"} 1
flipt_cache_miss_total{cache="memory",type="flag"} 1
go_gc_duration_seconds{quantile="0"} 8.641e-06
go_gc_duration_seconds{quantile="0.25"} 2.499e-05
go_gc_duration_seconds{quantile="0.5"} 3.5359e-05
go_gc_duration_seconds{quantile="0.75"} 6.6594e-05
go_gc_duration_seconds{quantile="1"} 0.00026651 go_gc_duration_seconds_sum
0.000402094 go_gc_duration_seconds_count 5

There is an example provided in the GitHub repository showing how to set up Flipt with Prometheus.


Grafana Dashboard

We have created a set of Grafana dashboards that you can use to visualize the metrics collected by Flipt, including both server health and flag evaluation metrics.

You can find the dashboards in our grafana-dashboards repository.


Flipt supports distributed tracing via the OpenTracing protocol and Jaeger library. Enable tracing via the configuration values described above and point Flipt to your Jaeger host to record spans.

There is an example provided in the GitHub repository showing how to set up Flipt with Jaeger.