Telemetry

[slashdotdash]

Add metrics and instrumentation using the Telemetry library. This would allow runtime monitoring of Event Store usage.

• Appended events
  • Count
  • Total time
• Read events
  • Query duration
• Subscriptions
  • Name
  • Stream identity
  • Last processed event
  • How far behind (e.g. number of stream events - last processed)
  • Acknowledgement

Telemetry.Poller allows periodic measurements, such as subscription monitoring as listed above.

[slashdotdash]

For reference these are the stats reported by Event Store (https://eventstore.org/).

[yordis]

It may be these links now

• https://developers.eventstore.com/clients/http-api/v5/api.html#stats
• https://developers.eventstore.com/server/v21.10/diagnostics.html