> ## Documentation Index
> Fetch the complete documentation index at: https://docs.pg-sharding.tech/llms.txt
> Use this file to discover all available pages before exploring further.

# Metrics

SPQR provides a set of metrics with appropriate Prometheus metric types and exposes them through an HTTP server for collection by Prometheus.
Exporter HTTP-endpoint can be enabled by `use_metrics` router configuration parameter. Also you can configure endpoint by using `metric_path` and `metric_port`.

## Router metrics

| Name                                 | Type    | Description                                        | Labels |
| ------------------------------------ | ------- | -------------------------------------------------- | ------ |
| `spqr_reloads_total`                 | Counter | Config reloads count                               | \[]    |
| `spqr_inbound_queries_total`         | Counter | Total number of incoming queries since start       | \[]    |
| `spqr_router_client_conn_tcp_total`  | Counter | Current number of client tcp connections           | \[]    |
| `spqr_router_client_conn_active_tcp` | Gauge   | Total number of client tcp connections since start | \[]    |
| `spqr_router_time`                   | Summary | Routing latency time quantile                      | \[]    |
| `spqr_shard_time`                    | Summary | Shard latency time quantile                        | \[]    |
| `spqr_canceled_requests_total`       | Counter | Number of requests canceled from client side       | \[]    |
| `spqr_client_init_fail_count_total`  | Counter | Failed client connection initialisation count      | \[]    |
| `spqr_client_auth_fail_count_total`  | Counter | Failed client connection authentication count      | \[]    |