# TrafficRoutingConfig


Defines the traffic routing strategy during an endpoint deployment to shift traffic from the old fleet to the new fleet.

## Contents


 ** Type **   <a name="sagemaker-Type-TrafficRoutingConfig-Type"></a>
Traffic routing strategy type.  
+  `ALL_AT_ONCE`: Endpoint traffic shifts to the new fleet in a single step. 
+  `CANARY`: Endpoint traffic shifts to the new fleet in two steps. The first step is the canary, which is a small portion of the traffic. The second step is the remainder of the traffic. 
+  `LINEAR`: Endpoint traffic shifts to the new fleet in n steps of a configurable size. 
Type: String  
Valid Values: `ALL_AT_ONCE | CANARY | LINEAR`   
Required: Yes

 ** WaitIntervalInSeconds **   <a name="sagemaker-Type-TrafficRoutingConfig-WaitIntervalInSeconds"></a>
The waiting time (in seconds) between incremental steps to turn on traffic on the new endpoint fleet.  
Type: Integer  
Valid Range: Minimum value of 0. Maximum value of 3600.  
Required: Yes

 ** CanarySize **   <a name="sagemaker-Type-TrafficRoutingConfig-CanarySize"></a>
Batch size for the first step to turn on traffic on the new endpoint fleet. `Value` must be less than or equal to 50% of the variant's total instance count.  
Type: [CapacitySize](API_CapacitySize.md) object  
Required: No

 ** LinearStepSize **   <a name="sagemaker-Type-TrafficRoutingConfig-LinearStepSize"></a>
Batch size for each step to turn on traffic on the new endpoint fleet. `Value` must be 10-50% of the variant's total instance count.  
Type: [CapacitySize](API_CapacitySize.md) object  
Required: No

## See Also


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/sagemaker-2017-07-24/TrafficRoutingConfig) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/sagemaker-2017-07-24/TrafficRoutingConfig) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/sagemaker-2017-07-24/TrafficRoutingConfig)