SAP-C02 Question 619
Select 2A company is running a highly available web application on Amazon ECS using the Fargate launch type. The application is fronted by an Application Load Balancer (ALB) and stores its state in an Amazon RDS for PostgreSQL database. The company is looking to ensure that the application can handle a regional disaster with minimal downtime. What is the MOST cost-effective solution to achieve this?
- A
Enable cross-region replication for the Amazon RDS instance and configure a failover to the replica in case of a regional disaster.
- B
Use AWS Global Accelerator to route traffic to ECS tasks in multiple regions, ensuring fault tolerance.
- C
Deploy the ECS services in multiple regions and use Route 53 latency-based routing to direct traffic.
- D
Configure an Amazon RDS Multi-AZ deployment to improve redundancy and availability within the region.
- E
Ensure the ECS service is configured with Service Auto Scaling to handle increased demand during a disaster.
Show answer and explanation
Correct answers: A, C
Explanation
To ensure resilience against regional disasters with minimal downtime, the application needs to be deployed across multiple regions. Cross-region replication for the database ensures the state is replicated, while deploying ECS services in multiple regions with Route 53 latency-based routing allows traffic to be directed to a healthy region. Other options like AWS Global Accelerator and Service Auto Scaling do not address the need for cross-region disaster recovery.
- A. Correct.
Correct. Enabling cross-region replication for the RDS instance ensures that a replica is available in another region. This allows for failover in the event of a regional disaster.
- B. Incorrect.
Incorrect. While AWS Global Accelerator can improve performance and resilience for multi-region architectures, it does not directly address state replication for the database or ensure fault tolerance for ECS tasks.
- C. Correct.
Correct. Deploying ECS services in multiple regions and using Route 53 latency-based routing ensures that traffic can be routed to a healthy region during regional disasters.
- D. Incorrect.
Incorrect. RDS Multi-AZ deployment only provides high availability within the same region and does not address regional disasters.
- E. Incorrect.
Incorrect. Service Auto Scaling ensures the application can scale to meet demand but does not address regional disaster recovery.