DVA-C02 Question 329
Select 3An e-commerce application running on AWS is experiencing intermittent performance issues. As a developer, you need to monitor the application to identify the root cause of the problem. Which combination of AWS services and features should you use to gain actionable insights into the application's performance and troubleshoot the issue effectively?
- A
Enable Amazon CloudWatch Logs to collect and monitor application logs in real-time.
- B
Use AWS X-Ray to trace requests and analyze latencies within the application.
- C
Enable AWS CloudTrail to monitor API calls for application debugging.
- D
Set up Amazon CloudWatch Alarms to trigger actions when specific thresholds are breached.
- E
Use AWS Trusted Advisor to recommend performance optimizations in the application code.
Show answer and explanation
Correct answers: A, B, D
Explanation
To effectively monitor and diagnose an application's performance issues, you need a combination of tools that provide insights into logs, metrics, and request traces. Amazon CloudWatch Logs captures detailed log data, AWS X-Ray allows for tracing and latency analysis, and CloudWatch Alarms enables real-time alerting on performance thresholds. Together, these services provide a comprehensive approach to identifying and resolving performance bottlenecks.
- A. Correct.
Amazon CloudWatch Logs is essential for collecting and monitoring application logs, which can provide valuable insights into errors, performance issues, and operational data. This is a core component for troubleshooting.
- B. Correct.
AWS X-Ray helps developers trace requests and visualize application performance issues, such as latency bottlenecks and service dependencies. This is critical for diagnosing intermittent performance issues.
- C. Incorrect.
AWS CloudTrail is primarily used for auditing and tracking API calls for security and compliance purposes, not for debugging or monitoring application performance.
- D. Correct.
Amazon CloudWatch Alarms allow you to set thresholds for metrics and trigger actions, such as notifications or auto-scaling, when those thresholds are breached. This helps you proactively respond to performance issues.
- E. Incorrect.
AWS Trusted Advisor provides recommendations for improving cost, security, and performance, but it does not directly assist in debugging or monitoring application-level performance issues.