Câu 250: AWS Certified Solutions Architect - Associate SAA-C02(Old)

A company has an ecommerce application that stores data in an on-premises SQL database. The company has decided to migrate this database to AWS.However, as part of the migration, the company wants to find a way to attain sub-millisecond responses to common read requests. A solutions architect knows that the increase in speed is paramount and that a small percentage of stale data returned in the database reads is acceptable. What should the solutions architect recommend?

1. A. Build Amazon RDS read replicas.
2. B. Build the database as a larger instance type.
3. C. Build a database cache using Amazon ElastiCache. — đáp án hiện tại
4. D. Build a database cache using Amazon Elasticsearch Service (Amazon ES).