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Fork of the AMQP library with some improvements and facilities

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amqpx lib amqp backoff jittered.ex
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lib/amqp/backoff/jittered.ex 

defmodule Amqpx.Backoff.Jittered do

  @moduledoc """

  Implements a jittered backoff strategy

  """



  @spec backoff(

          attempt :: number(),

          base_backoff_ms :: number(),

          max_backoff_ms :: number()

        ) :: pos_integer()

  def backoff(attempt, base_backoff_ms, max_backoff_ms) do

    (base_backoff_ms * :math.pow(2, attempt))

    |> min(max_backoff_ms)

    |> trunc

    |> :rand.uniform()

  end

end