A Company Is Testing a Web Application That Runs on Amazon

question 485

Multiple Choice

A company is testing a web application that runs on Amazon EC2 instances behind an Application Load Balancer. The instances run in an Auto Scaling group across multiple Availability Zones. The company uses a blue/green deployment process with immutable instances when deploying new software. During testing, users are being automatically logged out of the application at random times. Testers also report that, when a new version of the application is deployed, all users are logged out. The Development team needs a solution to ensure users remain logged in across scaling events and application deployments. What is the MOST efficient way to ensure users remain logged in?

• A) Enable smart sessions on the load balancer and modify the application to check for an existing session.
• B) Enable session sharing on the load balancer and modify the application to read from the session store.
• C) Store user session information in an Amazon S3 bucket and modify the application to read session information from the bucket.
• D) Modify the application to store user session information in an Amazon ElastiCache cluser.

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