com.linkedin.parseq.retry.backoff

Class ExponentialBackoff

java.lang.Object

com.linkedin.parseq.retry.backoff.ExponentialBackoff

All Implemented Interfaces:

BackoffPolicy

public class ExponentialBackoff
extends java.lang.Object
implements BackoffPolicy

A policy that doubles the backoff duration after every attempt.

Author:

Oleg Anashkin ([email protected])

Field Summary

Fields

Modifier and Type	Field and Description
protected long	_backoff

Constructor Summary

Constructors

Constructor and Description
ExponentialBackoff(long backoff) A policy that doubles the backoff duration after every attempt.

Method Summary

Modifier and Type	Method and Description
long	nextBackoff(int attempts, java.lang.Throwable error) Computes the next backoff duration using the specified number of attempts and the error that caused the operation to consider another attempt.

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.linkedin.parseq.retry.backoff.BackoffPolicy

constant, exponential, fibonacci, linear, noBackoff, randomized, selected

Field Detail

_backoff

protected final long _backoff

Constructor Detail

ExponentialBackoff

public ExponentialBackoff(long backoff)

A policy that doubles the backoff duration after every attempt.

Parameters:

backoff - The backoff used for the first retry as well as the base for all subsequent attempts.

Method Detail

nextBackoff

public long nextBackoff(int attempts,
                        java.lang.Throwable error)

Computes the next backoff duration using the specified number of attempts and the error that caused the operation to consider another attempt.

Specified by:

nextBackoff in interface BackoffPolicy

Parameters:

attempts - The number of attempts that have been made so far.

error - The error that caused the operation to consider another attempt.

Returns:

The computed backoff duration in milliseconds.