A Company Is Planning a Large Event Where a Promotional

question 134

Multiple Choice

A company is planning a large event where a promotional offer will be introduced. The company's website is hosted on AWS and backed by an Amazon RDS for PostgreSQL DB instance. The website explains the promotion and includes a sign-up page that collects user information and preferences. Management expects large and unpredictable volumes of traffic periodically, which will create many database writes. A solutions architect needs to build a solution that does not change the underlying data model and ensures that submissions are not dropped before they are committed to the database. Which solution meets these requirements?

• A) Immediately before the event, scale up the existing DB instance to meet the anticipated demand. Then scale down after the event.
• B) Use Amazon SQS to decouple the application and database layers. Configure an AWS Lambda function to write items from the queue into the database.
• C) Migrate to Amazon DynamoDB and manage throughput capacity with automatic scaling.
• D) Use Amazon ElastiCache for Memcached to increase write capacity to the DB instance.

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