[Home](./index.md) > [fastify-metrics](./fastify-metrics.md) > [IRouteMetricsConfig](./fastify-metrics.iroutemetricsconfig.md) ## IRouteMetricsConfig interface Route metrics configuration **Signature:** ```typescript export interface IRouteMetricsConfig ``` ## Properties

Property	Modifiers	Type	Description
[customLabels?](./fastify-metrics.iroutemetricsconfig.customlabels.md)		Record<string, string \| ((request: FastifyRequest, reply: FastifyReply) => string)>	_(Optional)_ Custom labels to add to metrics
[enabled?](./fastify-metrics.iroutemetricsconfig.enabled.md)		boolean \| { histogram?: boolean; summary?: boolean; }	_(Optional)_ Enables or disables route metrics collection. Can be a boolean to enable/disable both histogram and summary, or an object to control each independently.
[groupStatusCodes?](./fastify-metrics.iroutemetricsconfig.groupstatuscodes.md)		boolean	_(Optional)_ Groups status code labels by first digit 200 becomes 2XX in metrics.
[invalidRouteGroup?](./fastify-metrics.iroutemetricsconfig.invalidroutegroup.md)		string	_(Optional)_ Unknown route label. If registeredRoutesOnly routes set to `false` unknown routes will have following url.
[methodBlacklist?](./fastify-metrics.iroutemetricsconfig.methodblacklist.md)		readonly HTTPMethods\[\]	_(Optional)_ A list of HTTP methods that will be excluded from metrics collection
[overrides?](./fastify-metrics.iroutemetricsconfig.overrides.md)		[IRouteMetricsOverrides](./fastify-metrics.iroutemetricsoverrides.md)	_(Optional)_ Metric configuration overrides
[registeredRoutesOnly?](./fastify-metrics.iroutemetricsconfig.registeredroutesonly.md)		boolean	_(Optional)_ Collect metrics only for registered routes. If `false`, then metrics for unknown routes `/unknown-unregistered-route` will be collected as well.
[routeBlacklist?](./fastify-metrics.iroutemetricsconfig.routeblacklist.md)		readonly (string \| RegExp)\[\]	_(Optional)_ A list of routes that will be excluded from metrics collection.