An Application Ingests a Large Number of Small Messages and Stores

question 227

Multiple Choice

An application ingests a large number of small messages and stores them in a database. The application uses AWS Lambda. A Development team is making changes to the application's processing logic. In testing, it is taking more than 15 minutes to process each message. The team is concerned the current backend may time out. Which changes should be made to the backend system to ensure each message is processed in the MOST scalable way?

• A) Add the messages to an Amazon SQS queue. Set up and Amazon EC2 instance to poll the queue and process messages as they arrive.
• B) Add the messages to an Amazon SQS queue. Set up Amazon EC2 instances in an Auto Scaling group to poll the queue and process the messages as they arrive.
• C) Create a support ticket to increase the Lambda timeout to 60 minutes to allow for increased processing time.
• D) Change the application to directly insert the body of the message into an Amazon RDS database.

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Definitions:

Consumer Surplus

The discrepancy between the aggregate amount consumers can and will pay for a product or service and the actual amount they pay.

Total Utility

The total satisfaction or benefit received by consuming a given total quantity of a good or service.

Marginal Utility

The additional utility derived from consuming one more unit of some good or service.

Consumer Surplus

The difference between the amount consumers are willing to pay for a good or service versus what they actually pay.