Namespace App.Metrics.ReservoirSampling.ExponentialDecay

A histogram with an exponentially decaying reservoir produces quantiles which are representative of (roughly) the last five minutes of data.

The reservoir is produced by using a forward-decaying reservoir with an exponential weighty towards recent data unlike a Uniform Reservoir which does not provide a sense of recency.

This sampling reservoir can be used when you are interested in recent changes to the distribution of data rather than a median on the lifetime of the histgram.