SAP-C02 Question 154
Select 2A company is migrating its on-premises web application to AWS. The application requires low-latency access to frequently updated data and must support high read and write throughput. Additionally, the company wants to ensure the application remains available across multiple AWS Regions. Which combination of services and configurations should you recommend?
- A
Use Amazon DynamoDB with global tables to replicate data across multiple Regions.
- B
Deploy Amazon RDS with cross-Region read replicas for data replication.
- C
Use Amazon ElastiCache for Redis with replication groups for low-latency data access.
- D
Implement Amazon Aurora Global Database for cross-Region data access and low latency.
- E
Store the data in Amazon S3 and enable cross-Region replication.
Show answer and explanation
Correct answers: A, C
Explanation
The requirement specifies low-latency access, high read/write throughput, and multi-Region availability. Amazon DynamoDB with global tables is ideal for this scenario, as it supports multi-Region replication and offers high performance for both reads and writes. Additionally, Amazon ElastiCache for Redis can complement this setup by providing low-latency, in-memory data access for frequently updated data. Other options like RDS, Aurora, and S3 do not fully meet the scalability, performance, or latency requirements for this use case.
- A. Correct.
Correct: Amazon DynamoDB with global tables provides multi-Region, fully managed, and low-latency replication. It supports high read and write throughput, making it suitable for this use case.
- B. Incorrect.
Incorrect: Amazon RDS with cross-Region read replicas focuses on read scalability in secondary Regions but does not provide low-latency updates or high write throughput required for this scenario.
- C. Correct.
Correct: Amazon ElastiCache for Redis can provide low-latency access to frequently updated data using its in-memory capabilities, and replication groups support high availability.
- D. Incorrect.
Incorrect: While Amazon Aurora Global Database offers cross-Region replication, it is primarily optimized for relational databases, and this scenario does not specify a relational database requirement.
- E. Incorrect.
Incorrect: Amazon S3 with cross-Region replication is ideal for object storage and eventual consistency but is not designed for low-latency access or high read/write throughput for application data.