Package software.amazon.awscdk.services.autoscaling

Interface BasicStepScalingPolicyProps

All Superinterfaces:

software.amazon.jsii.JsiiSerializable

All Known Subinterfaces:

StepScalingPolicyProps

All Known Implementing Classes:

BasicStepScalingPolicyProps.Jsii$Proxy, StepScalingPolicyProps.Jsii$Proxy

@Generated(value="jsii-pacmak/1.113.0 (build fc68b25)",
           date="2025-10-14T12:28:05.492Z")
@Stability(Stable)
public interface BasicStepScalingPolicyProps
extends software.amazon.jsii.JsiiSerializable

Example:

 AutoScalingGroup autoScalingGroup;
 Metric workerUtilizationMetric = Metric.Builder.create()
         .namespace("MyService")
         .metricName("WorkerUtilization")
         .build();
 autoScalingGroup.scaleOnMetric("ScaleToCPU", BasicStepScalingPolicyProps.builder()
         .metric(workerUtilizationMetric)
         .scalingSteps(List.of(ScalingInterval.builder().upper(10).change(-1).build(), ScalingInterval.builder().lower(50).change(+1).build(), ScalingInterval.builder().lower(70).change(+3).build()))
         .evaluationPeriods(10)
         .datapointsToAlarm(5)
         // Change this to AdjustmentType.PERCENT_CHANGE_IN_CAPACITY to interpret the
         // 'change' numbers before as percentages instead of capacity counts.
         .adjustmentType(AdjustmentType.CHANGE_IN_CAPACITY)
         .build());
 

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static final class	BasicStepScalingPolicyProps.Builder	A builder for BasicStepScalingPolicyProps
static final class	BasicStepScalingPolicyProps.Jsii$Proxy	An implementation for BasicStepScalingPolicyProps

Method Summary

Modifier and Type	Method	Description
static BasicStepScalingPolicyProps.Builder	builder()
default AdjustmentType	getAdjustmentType()	How the adjustment numbers inside 'intervals' are interpreted.
default Duration	getCooldown()	Grace period after scaling activity.
default Number	getDatapointsToAlarm()	The number of data points out of the evaluation periods that must be breaching to trigger a scaling action.
default Duration	getEstimatedInstanceWarmup()	Estimated time until a newly launched instance can send metrics to CloudWatch.
default Number	getEvaluationPeriods()	How many evaluation periods of the metric to wait before triggering a scaling action.
IMetric	getMetric()	Metric to scale on.
default MetricAggregationType	getMetricAggregationType()	Aggregation to apply to all data points over the evaluation periods.
default Number	getMinAdjustmentMagnitude()	Minimum absolute number to adjust capacity with as result of percentage scaling.
List<ScalingInterval>	getScalingSteps()	The intervals for scaling.

Methods inherited from interface software.amazon.jsii.JsiiSerializable

$jsii$toJson

Method Details

getMetric

@Stability(Stable)
@NotNull
IMetric getMetric()

Metric to scale on.

getScalingSteps

@Stability(Stable)
@NotNull
List<ScalingInterval> getScalingSteps()

The intervals for scaling.

Maps a range of metric values to a particular scaling behavior.

Must be between 2 and 40 steps.

getAdjustmentType

@Stability(Stable)
@Nullable
default AdjustmentType getAdjustmentType()

How the adjustment numbers inside 'intervals' are interpreted.

Default: ChangeInCapacity

getCooldown

@Stability(Stable)
@Nullable
default Duration getCooldown()

Grace period after scaling activity.

Default: Default cooldown period on your AutoScalingGroup

getDatapointsToAlarm

@Stability(Stable)
@Nullable
default Number getDatapointsToAlarm()

The number of data points out of the evaluation periods that must be breaching to trigger a scaling action.

Creates an "M out of N" alarm, where this property is the M and the value set for evaluationPeriods is the N value.

Only has meaning if evaluationPeriods != 1. Must be less than or equal to evaluationPeriods.

Default: - Same as `evaluationPeriods`

getEstimatedInstanceWarmup

@Stability(Stable)
@Nullable
default Duration getEstimatedInstanceWarmup()

Estimated time until a newly launched instance can send metrics to CloudWatch.

Default: Same as the cooldown

getEvaluationPeriods

@Stability(Stable)
@Nullable
default Number getEvaluationPeriods()

How many evaluation periods of the metric to wait before triggering a scaling action.

Raising this value can be used to smooth out the metric, at the expense of slower response times.

If datapointsToAlarm is not set, then all data points in the evaluation period must meet the criteria to trigger a scaling action.

Default: 1

getMetricAggregationType

@Stability(Stable)
@Nullable
default MetricAggregationType getMetricAggregationType()

Aggregation to apply to all data points over the evaluation periods.

Only has meaning if evaluationPeriods != 1.

Default: - The statistic from the metric if applicable (MIN, MAX, AVERAGE), otherwise AVERAGE.

getMinAdjustmentMagnitude

@Stability(Stable)
@Nullable
default Number getMinAdjustmentMagnitude()

Minimum absolute number to adjust capacity with as result of percentage scaling.

Only when using AdjustmentType = PercentChangeInCapacity, this number controls the minimum absolute effect size.

Default: No minimum scaling effect

builder

@Stability(Stable)
static BasicStepScalingPolicyProps.Builder builder()

Returns:

a BasicStepScalingPolicyProps.Builder of BasicStepScalingPolicyProps