A Developer Migrated a Web Application to AWS

question 355

Multiple Choice

A Developer migrated a web application to AWS. As part of the migration, the Developer implemented an automated continuous integration/continuous improvement (CI/CD) process using a blue/green deployment. The deployment provisions new Amazon EC2 instances in an Auto Scaling group behind a new Application Load Balancer. After the migration was completed, the Developer began receiving complaints from users getting booted out of the system. The system also requires users to log in after every new deployment. How can these issues be resolved?

• A) Use rolling updates instead of a blue/green deployment
• B) Externalize the user sessions to Amazon ElastiCache
• C) Turn on sticky sessions in the Application Load Balancer
• D) Use multicast to replicate session information

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Definitions:

Action Identification Theory

A theory suggesting that the level at which an individual identifies an action influences how they perform and perceive the action.

Concrete

A building material made from a mixture of broken stone or gravel, sand, cement, and water, which can be spread or poured into molds and forms a stone-like mass on hardening.

Abstract

Referring to concepts or ideas that are not concrete or tangible, but are instead thought of in a theoretical or conceptual way.

Chopsticks

Eating utensils consisting of a pair of long, thin pieces of wood or other material, commonly used in many East Asian countries.