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# AWS::ApiGateway::Deployment CanarySetting
<a name="aws-properties-apigateway-deployment-canarysetting"></a>

The `CanarySetting` property type specifies settings for the canary deployment in this stage.

`CanarySetting` is a property of the [StageDescription](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-apigateway-deployment-stagedescription.html) property type.

## Syntax
<a name="aws-properties-apigateway-deployment-canarysetting-syntax"></a>

To declare this entity in your CloudFormation template, use the following syntax:

### JSON
<a name="aws-properties-apigateway-deployment-canarysetting-syntax.json"></a>

```
{
  "[PercentTraffic](#cfn-apigateway-deployment-canarysetting-percenttraffic)" : Number,
  "[StageVariableOverrides](#cfn-apigateway-deployment-canarysetting-stagevariableoverrides)" : {Key: Value, ...},
  "[UseStageCache](#cfn-apigateway-deployment-canarysetting-usestagecache)" : Boolean
}
```

### YAML
<a name="aws-properties-apigateway-deployment-canarysetting-syntax.yaml"></a>

```
  [PercentTraffic](#cfn-apigateway-deployment-canarysetting-percenttraffic): Number
  [StageVariableOverrides](#cfn-apigateway-deployment-canarysetting-stagevariableoverrides): 
    Key: Value
  [UseStageCache](#cfn-apigateway-deployment-canarysetting-usestagecache): Boolean
```

## Properties
<a name="aws-properties-apigateway-deployment-canarysetting-properties"></a>

`PercentTraffic`  <a name="cfn-apigateway-deployment-canarysetting-percenttraffic"></a>
The percent (0-100) of traffic diverted to a canary deployment.  
*Required*: No  
*Type*: Number  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`StageVariableOverrides`  <a name="cfn-apigateway-deployment-canarysetting-stagevariableoverrides"></a>
Stage variables overridden for a canary release deployment, including new stage variables introduced in the canary. These stage variables are represented as a string-to-string map between stage variable names and their values.  
*Required*: No  
*Type*: Object of String  
*Pattern*: `[a-zA-Z0-9]+`  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

`UseStageCache`  <a name="cfn-apigateway-deployment-canarysetting-usestagecache"></a>
A Boolean flag to indicate whether the canary deployment uses the stage cache or not.  
*Required*: No  
*Type*: Boolean  
*Update requires*: [No interruption](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-no-interrupt)

## See also
<a name="aws-properties-apigateway-deployment-canarysetting--seealso"></a>
+ [Stage](https://docs.aws.amazon.com/apigateway/latest/api/API_Stage.html) in the *Amazon API Gateway REST API Reference*