SAA-C03 Question 315
Single answerA company is building a globally distributed application that requires low-latency access for users across multiple regions. The application uses an Auto Scaling group in each region for compute resources and an Amazon RDS database for storing user data. The company wants to ensure high availability and scalability for the database and reduce read latency for users in different regions. Which solution should the company implement?
- A
Enable Amazon RDS Multi-AZ deployments and configure cross-region read replicas.
- B
Use Amazon ElastiCache with Multi-AZ deployments to cache database queries.
- C
Configure Amazon Aurora Global Database for the RDS database.
- D
Set up an Amazon CloudFront distribution to cache database responses.
Show answer and explanation
Correct answer: C
Explanation
Amazon Aurora Global Database is the best solution for a globally distributed, high-performance application requiring low-latency reads and high availability. It ensures near-real-time data replication across regions, enabling users to access data with minimal latency regardless of their location, while also providing disaster recovery capabilities. Other options either do not address the global scalability requirement or are not suitable for database synchronization.
- A. Incorrect.
This option provides fault tolerance in a single region with Multi-AZ deployments and read scalability using cross-region read replicas, but it does not offer the global database synchronization that Aurora Global Database provides.
- B. Incorrect.
Amazon ElastiCache is useful for caching and reducing query load but does not address the global synchronization of the database or the primary requirement for high availability of the database itself.
- C. Correct.
Amazon Aurora Global Database is purpose-built for globally distributed applications. It enables low-latency reads across multiple regions and provides disaster recovery by keeping data synchronized across regions with minimal latency.
- D. Incorrect.
Amazon CloudFront is a content delivery network (CDN) that caches static content, not database responses. It is not suitable for reducing database read latency or ensuring high availability.