# RDSEffectiveRecommendationPreferences
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 Describes the effective recommendation preferences for Amazon Aurora and RDS databases. 

## Contents
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 ** cpuVendorArchitectures **   <a name="computeoptimizer-Type-RDSEffectiveRecommendationPreferences-cpuVendorArchitectures"></a>
 Describes the CPU vendor and architecture for DB instance recommendations.   
Type: Array of strings  
Valid Values: `AWS_ARM64 | CURRENT`   
Required: No

 ** enhancedInfrastructureMetrics **   <a name="computeoptimizer-Type-RDSEffectiveRecommendationPreferences-enhancedInfrastructureMetrics"></a>
Describes the activation status of the enhanced infrastructure metrics preference.   
A status of `Active` confirms that the preference is applied in the latest recommendation refresh, and a status of `Inactive` confirms that it's not yet applied to recommendations.   
For more information, see [Enhanced infrastructure metrics](https://docs.aws.amazon.com/compute-optimizer/latest/ug/enhanced-infrastructure-metrics.html) in the * AWS Compute Optimizer User Guide*.   
Type: String  
Valid Values: `Active | Inactive`   
Required: No

 ** lookBackPeriod **   <a name="computeoptimizer-Type-RDSEffectiveRecommendationPreferences-lookBackPeriod"></a>
 The number of days the utilization metrics of the DB instance are analyzed.   
Type: String  
Valid Values: `DAYS_14 | DAYS_32 | DAYS_93`   
Required: No

 ** savingsEstimationMode **   <a name="computeoptimizer-Type-RDSEffectiveRecommendationPreferences-savingsEstimationMode"></a>
 Describes the savings estimation mode preference applied for calculating savings opportunity for DB instances.   
Type: [RDSSavingsEstimationMode](API_RDSSavingsEstimationMode.md) object  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/compute-optimizer-2019-11-01/RDSEffectiveRecommendationPreferences) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/compute-optimizer-2019-11-01/RDSEffectiveRecommendationPreferences) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/compute-optimizer-2019-11-01/RDSEffectiveRecommendationPreferences)