# AutoScalingPolicy
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Amazon Keyspaces supports the `target tracking` auto scaling policy. With this policy, Amazon Keyspaces auto scaling ensures that the table's ratio of consumed to provisioned capacity stays at or near the target value that you specify. You define the target value as a percentage between 20 and 90.

## Contents
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 ** targetTrackingScalingPolicyConfiguration **   <a name="keyspaces-Type-AutoScalingPolicy-targetTrackingScalingPolicyConfiguration"></a>
Auto scaling scales up capacity automatically when traffic exceeds this target utilization rate, and then back down when it falls below the target. A `double` between 20 and 90.  
Type: [TargetTrackingScalingPolicyConfiguration](API_TargetTrackingScalingPolicyConfiguration.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\+\+](https://docs.amazonaws.cn/goto/SdkForCpp/keyspaces-2022-02-10/AutoScalingPolicy) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/keyspaces-2022-02-10/AutoScalingPolicy) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/keyspaces-2022-02-10/AutoScalingPolicy)