An application that runs on Amazon EC2 instances behind an Application Load Balancer is deployed using AWS Elastic Beanstalk. During a recent rolling deployment, users experienced application errors even though application health checks were passing on all instances. A log analysis shows that the errors were caused by user requests being processed by two different versions of the application behind the same load balancer. The analysis also shows a recent change made the responses backward incompatible.
Which deployment method will address these issues?

Question

An application that runs on Amazon EC2 instances behind an Application Load Balancer is deployed using AWS Elastic Beanstalk. During a recent rolling deployment, users experienced application errors even though application health checks were passing on all instances. A log analysis shows that the errors were caused by user requests being processed by two different versions of the application behind the same load balancer. The analysis also shows a recent change made the responses backward incompatible.

Which deployment method will address these issues?

ERIC MERRILL · Accepted Answer

Update Elastic Beanstalk to deploy using the rolling with additional batch method.

ERIC MERRILL · Answer

Update Elastic Beanstalk to deploy using the all at once method.

ERIC MERRILL · Answer

Update Elastic Beanstalk to deploy using the blue/green method.

ERIC MERRILL · Answer

Update Elastic Beanstalk to deploy using the immutable method.

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