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Metrics

Prometheus​

To enable the Prometheus /metrics endpoint, set the PROMETHEUS_ENABLED environment variable to true.

When enabled, Flagsmith serves the /metrics endpoint on a standalone HTTP server on port 9100, separate from the main API server. This design ensures that metrics collection remains available even when the main API is under heavy load.

The metrics provided by Flagsmith are described below.

flagsmith_build_info​

Gauge.

Flagsmith version and build information.

Labels:

  • ci_commit_sha
  • version

flagsmith_environment_document_cache_queries​

Counter.

Results of cache retrieval for environment document. result label is either hit or miss.

Labels:

  • result

flagsmith_http_server_request_duration_seconds​

Histogram.

HTTP request duration in seconds.

Labels:

  • route
  • method
  • response_status

flagsmith_http_server_requests​

Counter.

Total number of HTTP requests.

Labels:

  • route
  • method
  • response_status

flagsmith_http_server_response_size_bytes​

Histogram.

HTTP response size in bytes.

Labels:

  • route
  • method
  • response_status

flagsmith_task_processor_enqueued_tasks​

Counter.

Total number of enqueued tasks.

Labels:

  • task_identifier

flagsmith_task_processor_finished_tasks​

Counter.

Total number of finished tasks. Only collected by Task Processor. task_type label is either recurring or standard.

Labels:

  • task_identifier
  • task_type
  • result

flagsmith_task_processor_task_duration_seconds​

Histogram.

Task processor task duration in seconds. Only collected by Task Processor. task_type label is either recurring or standard.

Labels:

  • task_identifier
  • task_type
  • result