Detecting and Analyzing Performance Issues with AWS Lambda

Correct Answer - C.

AWS X-Ray can be used to detect performance issues for AWS Lambda applications.

AWS Lambda sends traces to X-Ray which is further analysed to generate a performance report.

Option A is incorrect because AWS CloudTrail will capture API calls made by AWS Lambda.

Option B is incorrect because Amazon CloudWatch will track the number of requests, execution time request & error generated, but it won't help in analysing end-to-end application performance.

Option D is incorrect because AWS Config will not help to detect performance issues with AWS Lambda.

AWS Config can audit configuration of AWS resource.

For more information on debugging AWS Lambda application performance, refer to the following URL:

https://docs.aws.amazon.com/lambda/latest/dg/lambda-monitoring.html

The correct answer is C. AWS X-Ray.

AWS Lambda is a serverless computing service that enables developers to run code without provisioning or managing servers. When an AWS Lambda function is invoked, it starts a new instance of the function to handle the request. However, as the number of function invocations grows, it can become difficult to track and analyze the performance of the application. This is where AWS X-Ray comes into play.

AWS X-Ray is a service that helps developers analyze and debug distributed applications, including those based on microservices and serverless architectures. It provides a visual representation of the application's architecture, showing how requests flow through the different components of the application. With X-Ray, developers can identify the root cause of performance issues and errors, and improve the overall performance of their applications.

In the case of AWS Lambda applications, X-Ray can be used to trace requests as they flow through the different components of the application. It provides detailed information about the duration of each function invocation, as well as any errors or exceptions that occurred during the execution. This allows developers to identify and troubleshoot performance issues, optimize the application's architecture, and improve the end-user experience.

In contrast, AWS CloudTrail is a service that provides a record of actions taken by a user, role, or an AWS service in a specific AWS account. It is primarily used for auditing and compliance purposes, rather than performance analysis.

Amazon CloudWatch is a monitoring and management service that provides data and actionable insights for AWS resources. It can be used to monitor AWS Lambda functions, but it does not provide the detailed performance analysis capabilities of AWS X-Ray.

AWS Config is a service that provides a detailed inventory of the AWS resources in an account, as well as a history of configuration changes. It is primarily used for compliance and governance purposes, rather than performance analysis.