BinaryExponential returns an Exponential strategy with a base of 2.0 delay = baseDelay * 2^(attempts - 1) Ex.

Constant returns a strategy that always returns the provided duration.

Exponential returns a strategy that exponentially increases based off of the number of attempts.

Linear returns a strategy that linearly increases based off of the number of attempts.

Strategy is a function that provides the amount of time to wait before trying again.