[[observability-metrics]]
=== Observability - Metrics

Below you can find a list of all metrics declared by this project.

[[observability-metrics-gateway-http-client-observation]]
==== Gateway Http Client Observation

____
Observation created when sending a request through the gateway.
____


**Metric name** `http.client.requests` (defined by convention class `org.springframework.cloud.gateway.filter.headers.observation.DefaultGatewayObservationConvention`). **Type** `timer`.

**Metric name** `http.client.requests.active` (defined by convention class `org.springframework.cloud.gateway.filter.headers.observation.DefaultGatewayObservationConvention`). **Type** `long task timer`.


IMPORTANT: KeyValues that are added after starting the Observation might be missing from the *.active metrics.


IMPORTANT: Micrometer internally uses `nanoseconds` for the baseunit. However, each backend determines the actual baseunit. (i.e. Prometheus uses seconds)


Fully qualified name of the enclosing class `org.springframework.cloud.gateway.filter.headers.observation.GatewayDocumentedObservation`.



.Low cardinality Keys
[cols="a,a"]
|===
|Name | Description
|`http.method` _(required)_|HTTP Method.
|`http.status_code` _(required)_|HTTP Status.
|`spring.cloud.gateway.route.id` _(required)_|Route ID.
|`spring.cloud.gateway.route.uri` _(required)_|HTTP URI taken from the Route.
|===

.High cardinality Keys
[cols="a,a"]
|===
|Name | Description
|`http.uri` _(required)_|Full HTTP URI.
|===