reactor.retry

Interface Backoff

All Superinterfaces:

java.util.function.Function<IterationContext<?>,BackoffDelay>

public interface Backoff
extends java.util.function.Function<IterationContext<?>,BackoffDelay>

Backoff function

Field Summary

Fields

Modifier and Type	Field and Description
static Backoff	ZERO_BACKOFF

Method Summary

Modifier and Type	Method and Description
static Backoff	exponential(java.time.Duration firstBackoff, java.time.Duration maxBackoff, int factor, boolean basedOnPreviousValue) Backoff function with exponential backoff delay.
static Backoff	fixed(java.time.Duration backoffInterval) Backoff function with fixed backoff delay
static Backoff	zero() Backoff function with no backoff delay

Methods inherited from interface java.util.function.Function

andThen, apply, compose, identity

Field Detail

ZERO_BACKOFF

static final Backoff ZERO_BACKOFF

Method Detail

zero

static Backoff zero()

Backoff function with no backoff delay

Returns:

Backoff function for zero backoff delay

fixed

static Backoff fixed(java.time.Duration backoffInterval)

Backoff function with fixed backoff delay

Parameters:

backoffInterval - backoff interval

Returns:

Backoff function with fixed backoff delay

exponential

static Backoff exponential(java.time.Duration firstBackoff,
                           @Nullable
                           java.time.Duration maxBackoff,
                           int factor,
                           boolean basedOnPreviousValue)

Backoff function with exponential backoff delay. Retries are performed after a backoff interval of firstBackoff * (factor ** n) where n is the iteration. If maxBackoff is not null, the maximum backoff applied will be limited to maxBackoff.

If basedOnPreviousValue is true, backoff will be calculated using prevBackoff * factor. When backoffs are combined with Jitter, this value will be different from the actual exponential value for the iteration.

Parameters:

firstBackoff - First backoff duration

maxBackoff - Maximum backoff duration

factor - The multiplicand for calculating backoff

basedOnPreviousValue - If true, calculation is based on previous value which may be a backoff with jitter applied

Returns:

Backoff function with exponential delay