redis.clients.jedis.util

Class Delay

java.lang.Object

redis.clients.jedis.util.Delay

public abstract class Delay
extends java.lang.Object

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Delay()

Method Summary

Modifier and Type	Method and Description
static Delay	constant(java.time.Duration delay) Creates a constant delay.
abstract java.time.Duration	delay(long attempt) Calculate a specific delay based on the attempt.
static Delay	exponentialWithJitter(java.time.Duration lower, java.time.Duration upper, java.time.Duration base) Creates an exponential delay with equal jitter.

Methods inherited from class java.lang.Object

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

Constructor Detail

Delay

protected Delay()

Method Detail

delay

public abstract java.time.Duration delay(long attempt)

Calculate a specific delay based on the attempt.

Parameters:

attempt - the attempt to calculate the delay from.

Returns:

the calculated delay.

constant

public static Delay constant(java.time.Duration delay)

Creates a constant delay.

Parameters:

delay - the constant delay duration

Returns:

a Delay that always returns the same duration

exponentialWithJitter

public static Delay exponentialWithJitter(java.time.Duration lower,
                                          java.time.Duration upper,
                                          java.time.Duration base)

Creates an exponential delay with equal jitter. Based on AWS exponential backoff strategy: https://aws.amazon.com/blogs/architecture/exponential-backoff-and-jitter/ Formula: temp = min(upper, base * 2^attempt) sleep = temp/2 + random_between(0, temp/2) result = max(lower, sleep)

Parameters:

lower - the minimum delay duration (lower bound)

upper - the maximum delay duration (upper bound)

base - the base delay duration

Returns:

a Delay with exponential backoff and equal jitter