AWS SDK Version 3 for .NET
API Reference

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Container for the parameters to the PutScalingPolicy operation. Creates or updates a scaling policy for a fleet. An active scaling policy prompts Amazon GameLift to track a certain metric for a fleet and automatically change the fleet's capacity in specific circumstances. Each scaling policy contains one rule statement. Fleets can have multiple scaling policies in force simultaneously.

A scaling policy rule statement has the following structure:

If [MetricName] is [ComparisonOperator] [Threshold] for [EvaluationPeriods] minutes, then [ScalingAdjustmentType] to/by [ScalingAdjustment].

For example, this policy: "If the number of idle instances exceeds 20 for more than 15 minutes, then reduce the fleet capacity by 10 instances" could be implemented as the following rule statement:

If [IdleInstances] is [GreaterThanOrEqualToThreshold] [20] for [15] minutes, then [ChangeInCapacity] by [-10].

To create or update a scaling policy, specify a unique combination of name and fleet ID, and set the rule values. All parameters for this action are required. If successful, the policy name is returned. Scaling policies cannot be suspended or made inactive. To stop enforcing a scaling policy, call DeleteScalingPolicy.

Fleet-related operations include:

Inheritance Hierarchy


Namespace: Amazon.GameLift.Model
Assembly: AWSSDK.GameLift.dll
Version: 3.x.y.z


public class PutScalingPolicyRequest : AmazonGameLiftRequest

The PutScalingPolicyRequest type exposes the following members


Public Method PutScalingPolicyRequest()


Public Property ComparisonOperator Amazon.GameLift.ComparisonOperatorType

Gets and sets the property ComparisonOperator.

Comparison operator to use when measuring the metric against the threshold value.

Public Property EvaluationPeriods System.Int32

Gets and sets the property EvaluationPeriods.

Length of time (in minutes) the metric must be at or beyond the threshold before a scaling event is triggered.

Public Property FleetId System.String

Gets and sets the property FleetId.

Unique identifier for a fleet to apply this policy to.

Public Property MetricName Amazon.GameLift.MetricName

Gets and sets the property MetricName.

Name of the Amazon GameLift-defined metric that is used to trigger an adjustment.

  • ActivatingGameSessions -- number of game sessions in the process of being created (game session status = ACTIVATING).

  • ActiveGameSessions -- number of game sessions currently running (game session status = ACTIVE).

  • CurrentPlayerSessions -- number of active or reserved player sessions (player session status = ACTIVE or RESERVED).

  • AvailablePlayerSessions -- number of player session slots currently available in active game sessions across the fleet, calculated by subtracting a game session's current player session count from its maximum player session count. This number includes game sessions that are not currently accepting players (game session PlayerSessionCreationPolicy = DENY_ALL).

  • ActiveInstances -- number of instances currently running a game session.

  • IdleInstances -- number of instances not currently running a game session.

Public Property Name System.String

Gets and sets the property Name.

Descriptive label that is associated with a scaling policy. Policy names do not need to be unique. A fleet can have only one scaling policy with the same name.

Public Property ScalingAdjustment System.Int32

Gets and sets the property ScalingAdjustment.

Amount of adjustment to make, based on the scaling adjustment type.

Public Property ScalingAdjustmentType Amazon.GameLift.ScalingAdjustmentType

Gets and sets the property ScalingAdjustmentType.

Type of adjustment to make to a fleet's instance count (see FleetCapacity):

  • ChangeInCapacity -- add (or subtract) the scaling adjustment value from the current instance count. Positive values scale up while negative values scale down.

  • ExactCapacity -- set the instance count to the scaling adjustment value.

  • PercentChangeInCapacity -- increase or reduce the current instance count by the scaling adjustment, read as a percentage. Positive values scale up while negative values scale down; for example, a value of "-10" scales the fleet down by 10%.

Public Property Threshold System.Double

Gets and sets the property Threshold.

Metric value used to trigger a scaling event.

Version Information

.NET Standard:
Supported in: 1.3

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms