Package software.amazon.lambda.durable.retry

Class PollingStrategies

java.lang.Object

software.amazon.lambda.durable.retry.PollingStrategies

public class PollingStrategies
extends Object

Factory class for creating common polling strategies.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	PollingStrategies.Presets	Preset polling strategies for common use cases.

Constructor Summary

Constructors

Constructor	Description
PollingStrategies()

Method Summary

Modifier and Type	Method	Description
static PollingStrategy	exponentialBackoff(Duration baseInterval, double backoffRate, JitterStrategy jitter, Duration maxInterval)	Creates an exponential backoff polling strategy.
static PollingStrategy	fixedDelay(Duration interval)	Creates a fixed-delay polling strategy that uses the same interval for every attempt.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

PollingStrategies

public PollingStrategies()

Method Details

exponentialBackoff

public static PollingStrategy exponentialBackoff(Duration baseInterval,
 double backoffRate,
 JitterStrategy jitter,
 Duration maxInterval)

Creates an exponential backoff polling strategy.

The delay calculation follows the formula: delay = jitter(baseInterval × backoffRate^attempt)

Parameters:

baseInterval - Base delay before first poll

backoffRate - Multiplier for exponential backoff (must be positive)

jitter - Jitter strategy to apply to delays

maxInterval - Maximum delay between polls

Returns:

PollingStrategy implementing exponential backoff with jitter

fixedDelay

public static PollingStrategy fixedDelay(Duration interval)

Creates a fixed-delay polling strategy that uses the same interval for every attempt.

Parameters:

interval - Fixed delay between polls

Returns:

PollingStrategy with fixed delay