com.netflix.concurrency.limits.limit

Class Gradient2Limit.Builder

java.lang.Object

com.netflix.concurrency.limits.limit.Gradient2Limit.Builder

Enclosing class:

Gradient2Limit

public static class Gradient2Limit.Builder
extends java.lang.Object

Constructor Summary

Constructors

Constructor and Description
Builder()

Method Summary

Modifier and Type	Method and Description
Gradient2Limit	build()
Gradient2Limit.Builder	driftMultiplier(int multiplier) Maximum multiple of the fast window after which we need to reset the limiter
Gradient2Limit.Builder	initialLimit(int initialLimit) Initial limit used by the limiter
Gradient2Limit.Builder	longWindow(int n)
Gradient2Limit.Builder	maxConcurrency(int maxConcurrency) Maximum allowable concurrency.
Gradient2Limit.Builder	metricRegistry(MetricRegistry registry) Registry for reporting metrics about the limiter's internal state.
Gradient2Limit.Builder	minLimit(int minLimit) Minimum concurrency limit allowed.
Gradient2Limit.Builder	queueSize(java.util.function.Function<java.lang.Integer,java.lang.Integer> queueSize) Function to dynamically determine the amount the estimated limit can grow while latencies remain low as a function of the current limit.
Gradient2Limit.Builder	queueSize(int queueSize) Fixed amount the estimated limit can grow while latencies remain low
Gradient2Limit.Builder	shortWindow(int n)
Gradient2Limit.Builder	smoothing(double smoothing) Smoothing factor to limit how aggressively the estimated limit can shrink when queuing has been detected.

Methods inherited from class java.lang.Object

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

Constructor Detail

Builder

public Builder()

Method Detail

initialLimit

public Gradient2Limit.Builder initialLimit(int initialLimit)

Initial limit used by the limiter

Parameters:

initialLimit -

Returns:

Chainable builder

minLimit

public Gradient2Limit.Builder minLimit(int minLimit)

Minimum concurrency limit allowed. The minimum helps prevent the algorithm from adjust the limit too far down. Note that this limit is not desirable when use as backpressure for batch apps.

Parameters:

minLimit -

Returns:

Chainable builder

maxConcurrency

public Gradient2Limit.Builder maxConcurrency(int maxConcurrency)

Maximum allowable concurrency. Any estimated concurrency will be capped at this value

Parameters:

maxConcurrency -

Returns:

Chainable builder

queueSize

public Gradient2Limit.Builder queueSize(int queueSize)

Fixed amount the estimated limit can grow while latencies remain low

Parameters:

queueSize -

Returns:

Chainable builder

queueSize

public Gradient2Limit.Builder queueSize(java.util.function.Function<java.lang.Integer,java.lang.Integer> queueSize)

Function to dynamically determine the amount the estimated limit can grow while latencies remain low as a function of the current limit.

Parameters:

queueSize -

Returns:

Chainable builder

driftMultiplier

public Gradient2Limit.Builder driftMultiplier(int multiplier)

Maximum multiple of the fast window after which we need to reset the limiter

Parameters:

multiplier -

Returns:

smoothing

public Gradient2Limit.Builder smoothing(double smoothing)

Smoothing factor to limit how aggressively the estimated limit can shrink when queuing has been detected.

Parameters:

smoothing - Value of 0.0 to 1.0 where 1.0 means the limit is completely replicated by the new estimate.

Returns:

Chainable builder

metricRegistry

public Gradient2Limit.Builder metricRegistry(MetricRegistry registry)

Registry for reporting metrics about the limiter's internal state.

Parameters:

registry -

Returns:

Chainable builder

shortWindow

public Gradient2Limit.Builder shortWindow(int n)

longWindow

public Gradient2Limit.Builder longWindow(int n)

build

public Gradient2Limit build()