Package software.amazon.lambda.durable.retry

Enum Class JitterStrategy

java.lang.Object

java.lang.Enum<JitterStrategy>

software.amazon.lambda.durable.retry.JitterStrategy

All Implemented Interfaces:

Serializable, Comparable<JitterStrategy>, Constable

public enum JitterStrategy
extends Enum<JitterStrategy>

Jitter strategy for retry delays to prevent thundering herd problems.

Jitter reduces simultaneous retry attempts by spreading retries out over a randomized delay interval, which helps prevent overwhelming services when many clients retry at the same time.

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Enum

Enum.EnumDesc<E extends Enum<E>>

Enum Constant Summary

Enum Constants

Enum Constant	Description
FULL	Full jitter - random delay between 0 and calculated delay.
HALF	Half jitter - random delay between 50% and 100% of calculated delay.
NONE	No jitter - use exact calculated delay.

Method Summary

Modifier and Type	Method	Description
abstract double	apply(double baseDelay)
static JitterStrategy	valueOf(String name)	Returns the enum constant of this class with the specified name.
static JitterStrategy[]	values()	Returns an array containing the constants of this enum class, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, describeConstable, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Details

NONE

public static final JitterStrategy NONE

No jitter - use exact calculated delay. This provides predictable timing but may cause thundering herd issues.

FULL

public static final JitterStrategy FULL

Full jitter - random delay between 0 and calculated delay. This provides maximum spread but may result in very short delays.

HALF

public static final JitterStrategy HALF

Half jitter - random delay between 50% and 100% of calculated delay. This provides good spread while maintaining reasonable minimum delays.

Method Details

values

public static JitterStrategy[] values()

Returns an array containing the constants of this enum class, in the order they are declared.

Returns:

an array containing the constants of this enum class, in the order they are declared

valueOf

public static JitterStrategy valueOf(String name)

Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum class has no constant with the specified name

NullPointerException - if the argument is null

apply

public abstract double apply(double baseDelay)