# DeploymentCircuitBreaker
<a name="API_DeploymentCircuitBreaker"></a>

**Note**  
The deployment circuit breaker can only be used for services using the rolling update (`ECS`) deployment type.

The **deployment circuit breaker** determines whether a service deployment will fail if the service can't reach a steady state. If it is turned on, a service deployment will transition to a failed state and stop launching new tasks. You can also configure Amazon ECS to roll back your service to the last completed deployment after a failure. For more information, see [Rolling update](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/deployment-type-ecs.html) in the *Amazon Elastic Container Service Developer Guide*.

For more information about API failure reasons, see [API failure reasons](https://docs.aws.amazon.com/AmazonECS/latest/developerguide/api_failures_messages.html) in the *Amazon Elastic Container Service Developer Guide*.

## Contents
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 ** enable **   <a name="ECS-Type-DeploymentCircuitBreaker-enable"></a>
Determines whether to use the deployment circuit breaker logic for the service.  
Type: Boolean  
Required: Yes

 ** rollback **   <a name="ECS-Type-DeploymentCircuitBreaker-rollback"></a>
Determines whether to configure Amazon ECS to roll back the service if a service deployment fails. If rollback is on, when a service deployment fails, the service is rolled back to the last deployment that completed successfully.  
Type: Boolean  
Required: Yes

## 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/ecs-2014-11-13/DeploymentCircuitBreaker) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ecs-2014-11-13/DeploymentCircuitBreaker) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ecs-2014-11-13/DeploymentCircuitBreaker)