package challenge import ( "math" "github.com/prometheus/client_golang/prometheus" "github.com/prometheus/client_golang/prometheus/promauto" ) var TimeTaken = promauto.NewHistogramVec(prometheus.HistogramOpts{ Name: "anubis_time_taken", Help: "The time taken for a browser to generate a response (milliseconds)", Buckets: prometheus.ExponentialBucketsRange(1, math.Pow(2, 20), 20), }, []string{"method"})