Paws::ApplicationAutoScaling::StepScalingPolicyConfiguration
This class represents one of two things:
Use the attributes of this class as arguments to methods. You shouldn't make instances of this class. Each attribute should be used as a named argument in the calls that expect this type of object.
As an example, if Att1 is expected to be a Paws::ApplicationAutoScaling::StepScalingPolicyConfiguration object:
$service_obj->Method(Att1 => { AdjustmentType => $value, ..., StepAdjustments => $value });
Use accessors for each attribute. If Att1 is expected to be an Paws::ApplicationAutoScaling::StepScalingPolicyConfiguration object:
$result = $service_obj->Method(...); $result->Att1->AdjustmentType
Represents a step scaling policy configuration to use with Application Auto Scaling.
Specifies how the ScalingAdjustment value in a StepAdjustment (https://docs.aws.amazon.com/autoscaling/application/APIReference/API_StepAdjustment.html) is interpreted (for example, an absolute number or a percentage). The valid values are ChangeInCapacity, ExactCapacity, and PercentChangeInCapacity.
ScalingAdjustment
ChangeInCapacity
ExactCapacity
PercentChangeInCapacity
AdjustmentType is required if you are adding a new step scaling policy configuration.
AdjustmentType
The amount of time, in seconds, to wait for a previous scaling activity to take effect.
With scale-out policies, the intention is to continuously (but not excessively) scale out. After Application Auto Scaling successfully scales out using a step scaling policy, it starts to calculate the cooldown time. The scaling policy won't increase the desired capacity again unless either a larger scale out is triggered or the cooldown period ends. While the cooldown period is in effect, capacity added by the initiating scale-out activity is calculated as part of the desired capacity for the next scale-out activity. For example, when an alarm triggers a step scaling policy to increase the capacity by 2, the scaling activity completes successfully, and a cooldown period starts. If the alarm triggers again during the cooldown period but at a more aggressive step adjustment of 3, the previous increase of 2 is considered part of the current capacity. Therefore, only 1 is added to the capacity.
With scale-in policies, the intention is to scale in conservatively to protect your application’s availability, so scale-in activities are blocked until the cooldown period has expired. However, if another alarm triggers a scale-out activity during the cooldown period after a scale-in activity, Application Auto Scaling scales out the target immediately. In this case, the cooldown period for the scale-in activity stops and doesn't complete.
Application Auto Scaling provides a default value of 300 for the following scalable targets:
ECS services
Spot Fleet requests
EMR clusters
AppStream 2.0 fleets
Aurora DB clusters
Amazon SageMaker endpoint variants
Custom resources
For all other scalable targets, the default value is 0:
DynamoDB tables
DynamoDB global secondary indexes
Amazon Comprehend document classification and entity recognizer endpoints
Lambda provisioned concurrency
Amazon Keyspaces tables
Amazon MSK broker storage
The aggregation type for the CloudWatch metrics. Valid values are Minimum, Maximum, and Average. If the aggregation type is null, the value is treated as Average.
Minimum
Maximum
Average
The minimum value to scale by when the adjustment type is PercentChangeInCapacity. For example, suppose that you create a step scaling policy to scale out an Amazon ECS service by 25 percent and you specify a MinAdjustmentMagnitude of 2. If the service has 4 tasks and the scaling policy is performed, 25 percent of 4 is 1. However, because you specified a MinAdjustmentMagnitude of 2, Application Auto Scaling scales out the service by 2 tasks.
MinAdjustmentMagnitude
A set of adjustments that enable you to scale based on the size of the alarm breach.
At least one step adjustment is required if you are adding a new step scaling policy configuration.
This class forms part of Paws, describing an object used in Paws::ApplicationAutoScaling
The source code is located here: https://github.com/pplu/aws-sdk-perl
Please report bugs to: https://github.com/pplu/aws-sdk-perl/issues
To install Paws, copy and paste the appropriate command in to your terminal.
cpanm
cpanm Paws
CPAN shell
perl -MCPAN -e shell install Paws
For more information on module installation, please visit the detailed CPAN module installation guide.