envoyproxy / envoyproxy/envoy

OpenMetrics Exemplars

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area/stats enhancement no stalebot
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Description

**Title**: Add support for OpenMetrics exemplars

**Description**:

Currently Envoy supports OpenMetrics format but does not export exemplars. Exemplars are very useful for discovering traces.

Envoy exports traces in a few different formats. There's also currently an effort to support OpenTelemetry for tracing https://github.com/envoyproxy/envoy/issues/9958.

https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md#exemplars-1

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