Polly.Contrib.WaitAndRetry
Helper methods for creating backoff strategies.
Generates sleep durations in an jittered manner, making sure to mitigate any correlations.
For example: 117ms, 236ms, 141ms, 424ms, ...
Per the formula from https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/.
The minimum duration value to use for the wait before each retry.
The maximum duration value to use for the wait before each retry.
The maximum number of retries to use, in addition to the original call.
An optional seed to use.
If not specified, will use a shared instance with a random seed, per Microsoft recommendation for maximum randomness.
Whether the first retry will be immediate or not.
Generates sleep durations as a constant value.
The formula used is: Duration = .
For example: 200ms, 200ms, 200ms, ...
The constant wait duration before each retry.
The maximum number of retries to use, in addition to the original call.
Whether the first retry will be immediate or not.
Generates sleep durations in an exponentially backing-off, jittered manner, making sure to mitigate any correlations.
For example: 850ms, 1455ms, 3060ms.
Per discussion in Polly issue 530, the jitter of this implementation exhibits fewer spikes and a smoother distribution than the AWS jitter formula.
The median delay to target before the first retry, call it f (= f * 2^0).
Choose this value both to approximate the first delay, and to scale the remainder of the series.
Subsequent retries will (over a large sample size) have a median approximating retries at time f * 2^1, f * 2^2 ... f * 2^t etc for try t.
The actual amount of delay-before-retry for try t may be distributed between 0 and f * (2^(t+1) - 2^(t-1)) for t >= 2;
or between 0 and f * 2^(t+1), for t is 0 or 1.
The maximum number of retries to use, in addition to the original call.
An optional seed to use.
If not specified, will use a shared instance with a random seed, per Microsoft recommendation for maximum randomness.
Whether the first retry will be immediate or not.
Generates sleep durations in an exponential manner.
The formula used is: Duration = x 2^iteration.
For example: 100ms, 200ms, 400ms, 800ms, ...
The duration value for the wait before the first retry.
The exponent to multiply each subsequent duration by.
The maximum number of retries to use, in addition to the original call.
Whether the first retry will be immediate or not.
Generates sleep durations in an linear manner.
The formula used is: Duration = x (1 + x iteration).
For example: 100ms, 200ms, 300ms, 400ms, ...
The duration value for the first retry.
The linear factor to use for increasing the duration on subsequent calls.
The maximum number of retries to use, in addition to the original call.
Whether the first retry will be immediate or not.
A random number generator with a Uniform distribution that is thread-safe (via locking).
Can be instantiated with a custom seed to make it emit deterministically.
Creates an instance of the class.
An optional seed to use.
If not specified, will use a shared instance with a random seed, per Microsoft recommendation for maximum randomness.
Returns a random floating-point number that is greater than or equal to 0.0,
and less than 1.0.
This method uses locks in order to avoid issues with concurrent access.
Returns a random floating-point number that is greater than or equal to ,
and less than .
The minimum value.
The maximum value.