fastify-metrics.iroutemetricsconfig.customlabels.md

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IRouteMetricsConfig.customLabels property

Custom labels to add to metrics

Signature:

customLabels?: Record<string, string | ((request: FastifyRequest, reply: FastifyReply) => string)>;

Example

customLabels: {
 myLabel: 'my-value',
 myLabel2: (request, reply) => request.headers['x-my-header'],
}