DOP-C02 Question 341
Select 3Your team is operating a web application running on Amazon ECS with Fargate. Recently, the application has started experiencing intermittent high response times, and customer complaints are increasing. You have been tasked with conducting a root cause analysis. Which actions should you take to effectively identify the root cause of the issue?
- A
Enable AWS X-Ray tracing for the application to analyze request flows and identify bottlenecks.
- B
Inspect Amazon CloudWatch metrics for ECS service CPU and memory utilization trends.
- C
Directly increase the Fargate task count to handle more traffic and observe if the issue resolves.
- D
Review application logs stored in Amazon CloudWatch Logs for errors or anomalies during high response times.
- E
Set up a latency-based Amazon Route 53 health check to redirect traffic to another region.
Show answer and explanation
Correct answers: A, B, D
Explanation
To effectively conduct a root cause analysis for performance issues, it is essential to gather detailed insights into the application's behavior and resource utilization. AWS X-Ray tracing, CloudWatch metrics, and application logs are critical tools for diagnosing performance problems. Increasing task count or redirecting traffic might temporarily alleviate symptoms but do not address the underlying cause of the high response times.
- A. Correct.
Enabling AWS X-Ray tracing can help identify bottlenecks, such as delays in external API calls or database queries, by providing a detailed view of the request life cycle.
- B. Correct.
Monitoring Amazon CloudWatch metrics for ECS service CPU and memory utilization will help determine if resource constraints are causing the high response times.
- C. Incorrect.
Simply increasing the Fargate task count without identifying the root cause may temporarily mitigate the issue but does not address the underlying problem.
- D. Correct.
Reviewing application logs in Amazon CloudWatch Logs can provide valuable insights into specific errors, exceptions, or anomalies that might be causing the high response times.
- E. Incorrect.
Setting up a latency-based Amazon Route 53 health check to redirect traffic is a reactive measure for improving availability and does not contribute to identifying the root cause of the issue.