Package io.camunda.zeebe.util

Class ExponentialBackoff

java.lang.Object

io.camunda.zeebe.util.ExponentialBackoff

All Implemented Interfaces:

LongUnaryOperator

public final class ExponentialBackoff
extends Object
implements LongUnaryOperator

An simple implementation of exponential backoff, which multiples the previous delay with an increasing multiplier and adding some jitter to avoid multiple clients polling at the same time even with back off.

The next delay is calculated as:

 max(min(maxDelay, currentDelay * backoffFactor), minDelay) + (rand(0.0, 1.0) *
 (currentDelay * jitterFactor) + (currentDelay * -jitterFactor)) 

Constructor Summary

Constructors

Constructor	Description
ExponentialBackoff()
ExponentialBackoff(long maxDelay, long minDelay)
ExponentialBackoff(long maxDelay, long minDelay, double backoffFactor, double jitterFactor)

Method Summary

Modifier and Type	Method	Description
long	applyAsLong(long operand)
long	supplyRetryDelay(long currentRetryDelay)

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.function.LongUnaryOperator

andThen, compose

Constructor Details

ExponentialBackoff

public ExponentialBackoff()

ExponentialBackoff

public ExponentialBackoff(long maxDelay,
 long minDelay)

ExponentialBackoff

public ExponentialBackoff(long maxDelay,
 long minDelay,
 double backoffFactor,
 double jitterFactor)

Method Details

applyAsLong

public long applyAsLong(long operand)

Specified by:

applyAsLong in interface LongUnaryOperator

supplyRetryDelay

public long supplyRetryDelay(long currentRetryDelay)