What does the ‘Swap Environment URLs' feature aid most directly when thinking of AWS Elastic Beanstalk?
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A. B. C. D.Answer - D.
The AWS Documentation mentions the following.
Because Elastic Beanstalk performs an in-place update when you update your application versions, your application may become unavailable to users for a short period of time.
It is possible to avoid this downtime by performing a blue/green deployment, where you deploy the new version to a separate environment and then swap CNAMEs of the two environments to redirect traffic to the new version instantly.
Blue/green deployments require that your environment runs independently of your production database, if your application uses one.
If your environment has an Amazon RDS DB instance attached to it, the data will not transfer over to your second environment.
They will be lost if you terminate the original environment.
For more information on Blue/Green deployments with AWS, please visit the link -
http://docs.aws.amazon.com/elasticbeanstalk/latest/dg/using-features.CNAMESwap.htmlThe 'Swap Environment URLs' feature in AWS Elastic Beanstalk allows users to seamlessly swap the URLs of two different environments. This feature directly aids Blue-Green deployments.
Blue-Green deployments are a technique for releasing new versions of an application with minimal downtime and risk. In this approach, two identical environments are set up, with one environment (blue) running the current version of the application and the other environment (green) running the new version of the application.
When it's time to release the new version, traffic is gradually shifted from the blue environment to the green environment. This shift is done using a routing mechanism, such as a load balancer or DNS. Once all traffic has been successfully shifted to the green environment, the blue environment can be shut down.
The 'Swap Environment URLs' feature in AWS Elastic Beanstalk allows the blue and green environments to be swapped easily, with the green environment taking over the URL of the blue environment, and vice versa. This allows for a smooth rollback process in case of any issues with the new version, by reverting to the previous version with minimal downtime.
Therefore, the correct answer is D. Blue-Green Deployments.