# Prometheus metrics export

Metarank exports a set of internal metrics you can use to monitor its health. See the [`/metrics`](/reference/api.md#prometheus-metrics) endpoint description for details on how to access them.

## Application metrics

All application metrics have a common `metarank_` prefix:

1. `metarank_rank_requests`: counter, number of requests received by the `/rank` endpoint. This metric also counts requests by model name.

```
metarank_rank_requests_total{model="model_name",} 5.0
```

1. `metarank_feedback_events`: counter, number of feedback events received both from API and any other connector (like kafka/pulsar/kinesis).

```
metarank_feedback_events_total 58441.0
```

1. `metarank_rank_latency_seconds`, histogram, latency distribution for `/rank` requests, scoped by a model. Percentiles tracked: 50%, 80%, 90%, 95%, 98%, 99%.

```
metarank_rank_latency_seconds{model="xgboost",quantile="0.5",} 0.011451508
metarank_rank_latency_seconds{model="xgboost",quantile="0.8",} 0.014340056
metarank_rank_latency_seconds{model="xgboost",quantile="0.9",} 0.119447575
metarank_rank_latency_seconds{model="xgboost",quantile="0.95",} 0.119447575
metarank_rank_latency_seconds{model="xgboost",quantile="0.98",} 0.119447575
metarank_rank_latency_seconds{model="xgboost",quantile="0.99",} 0.119447575
metarank_rank_latency_seconds_count{model="xgboost",} 5.0
metarank_rank_latency_seconds_sum{model="xgboost",} 0.16446094099999997
```

## JVM metrics

Metarank also exports a set of [default JVM metrics](https://github.com/prometheus/client_java/blob/main/simpleclient_hotspot/src/main/java/io/prometheus/client/hotspot/DefaultExports.java), related to buffers, classloaders, GC, allocation and threadpools.

All the JVM metrics have common `jvm_` prefix.

## Grafana dashboard

coming soon.


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# Agent Instructions: Querying This Documentation

If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.metarank.ai/reference/deployment-overview/prometheus.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.