A DevOps team is responsible for a serverless application consisting of AWS Lambda functions, Amazon API Gateway, and Amazon DynamoDB. They need to analyze performance bottlenecks and service dependencies during an incident to quickly identify the root cause of high latency. The solution must provide a visual representation of the request flow through all services. Which AWS service should they use?
- AAWS X-Ray
- BAWS Trusted Advisor
- CAmazon CloudWatch Logs
- DAWS Personal Health Dashboard
Show answer & explanationAnswer & explanation
Correct answer: A. AWS X-Ray
AWS X-Ray is designed for distributed tracing of requests as they flow through various services. It provides a service map that visually represents the connections between services and identifies performance bottlenecks, errors, and latency issues, making it ideal for root cause analysis in microservices and serverless architectures.
Why the other options are wrong
- B. AWS Trusted Advisor provides recommendations for cost optimization, security, performance, and fault tolerance, but it's not a real-time tracing or root cause analysis tool for application incidents.
- C. CloudWatch Logs collects logs, which can be useful, but it doesn't provide an integrated visual service map or trace requests across multiple services automatically.
- D. AWS Personal Health Dashboard provides information about AWS service health and scheduled events, not application-specific performance or request tracing.
AWS X-Ray for Distributed Tracing
AWS X-Ray helps developers analyze and debug production, distributed applications, such as those built using microservices. It provides an end-to-end view of requests as they travel through your application, showing a map of connected services and identifying performance bottlenecks.
- Provides end-to-end request tracing.
- Generates service maps for visualization.
- Helps identify performance bottlenecks and errors.
Memory trick: X-Ray traces the path, reveals the slow dance, for bottlenecks and errors, it gives you a chance.