This module implements exponential moving average logic, a useful data structure to store hits/second averaged over some time period.

For a general description see: http://en.wikipedia.org/wiki/Moving_average#Exponential_moving_average

USAGE

1. Create a moving average code with a given smoothing window.

   M1 = jn_mavg:new_mavg(300).

2. Update the moving average by accounting for new incoming events.

   M2 = jn_mavg:bump_mavg(M1, 1). M3 = jn_mavg:bump_mavg(M2, 1).

3. Query moving average value.

   EventsPerMinute = jn_mavg:getEventsPer(M3, 60). EventsPerHour = jn_mavg:getEventsPer(M3, 3600).