SAP-C02 Question 620
Single answerA company runs a highly available e-commerce platform on AWS. The platform consists of a fleet of EC2 instances behind an Application Load Balancer (ALB) and uses Amazon RDS for its database tier. Recently, the company experienced inconsistent performance and availability issues due to a sudden increase in traffic from a marketing campaign. As an AWS Solutions Architect, you need to design a solution to handle sudden traffic spikes while minimizing changes to the existing architecture. Which solution should you implement?
- A
Enable Auto Scaling for the EC2 instances and configure dynamic scaling policies based on CPU utilization.
- B
Migrate the database tier to Amazon DynamoDB to handle the increased traffic.
- C
Use AWS Global Accelerator to distribute traffic across multiple regions.
- D
Configure an Amazon SQS queue in front of the EC2 instances to decouple the application layer.
Show answer and explanation
Correct answer: A
Explanation
To handle sudden spikes in traffic with minimal architectural changes, enabling Auto Scaling for the EC2 instances is the most effective solution. It allows the application layer to dynamically adjust capacity based on demand, ensuring consistent performance and availability. The other options either require significant changes to the architecture or do not directly address the problem at hand.
- A. Correct.
This is the correct answer. Enabling Auto Scaling allows the EC2 instances to scale dynamically based on traffic, ensuring the application can handle sudden spikes. This solution is easy to implement and requires minimal changes to the existing architecture.
- B. Incorrect.
While Amazon DynamoDB is highly scalable, migrating the database tier would require significant changes to the architecture and is not the optimal solution for this immediate problem.
- C. Incorrect.
AWS Global Accelerator improves performance by routing traffic to the closest available endpoint, but it does not directly address the need to handle sudden spikes in traffic.
- D. Incorrect.
Amazon SQS is useful for decoupling application components, but it does not solve the issue of scaling the EC2 instances to handle increased traffic.