com.github.rbuck.retry

Class ExponentialBackoff

java.lang.Object

com.github.rbuck.retry.ExponentialBackoff

All Implemented Interfaces:

RetryStrategy

public class ExponentialBackoff
extends Object
implements RetryStrategy

Implements truncated binary exponential backoff to calculate retry delay per IEEE 802.3-2008 Section 1. There will be at most ten (10) contention periods of backoff, each contention period whose amount is equal to the delta backoff.

Author:

Robert Buck (buck.robert.j@gmail.com)

Field Summary

Fields

Modifier and Type	Field and Description
static long	DEFAULT_MAX_BACKOFF
static long	DEFAULT_MIN_BACKOFF
static int	DEFAULT_RETRY_COUNT
static long	DEFAULT_SLOT_TIME

Constructor Summary

Constructors

Constructor and Description
ExponentialBackoff()
ExponentialBackoff(int maxRetries)
ExponentialBackoff(int maxRetries, long minBackoff, long maxBackoff, long slotTime)

Method Summary

Methods

Modifier and Type	Method and Description
RetryState	getRetryState() Creates a prototype state every time a request is made.

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_RETRY_COUNT

public static final int DEFAULT_RETRY_COUNT

See Also:

Constant Field Values

DEFAULT_MIN_BACKOFF

public static final long DEFAULT_MIN_BACKOFF

DEFAULT_MAX_BACKOFF

public static final long DEFAULT_MAX_BACKOFF

DEFAULT_SLOT_TIME

public static final long DEFAULT_SLOT_TIME

Constructor Detail

ExponentialBackoff

public ExponentialBackoff()

ExponentialBackoff

public ExponentialBackoff(int maxRetries,
                  long minBackoff,
                  long maxBackoff,
                  long slotTime)

ExponentialBackoff

public ExponentialBackoff(int maxRetries)

Method Detail

getRetryState

public RetryState getRetryState()

Description copied from interface: RetryStrategy

Creates a prototype state every time a request is made.

Specified by:

getRetryState in interface RetryStrategy

Returns:

instance of retry state