How do I troubleshoot a serverless application?

Lambda function can be enabled for tracking, with AWS X-Ray by addition of X-Ray permissions to Lambda function’s role of execution and changing the function’s “mode of tracing” to “active.” When you enable X-ray for Lambda function, AWS Lambda shall emit the tracing information to X-Ray with information about the Lambda service that incurred while invoking the function. This shall provide you with information such as the overhead of Lambda service, the function unit time, and time for function execution. Also, the X-Ray SDK can be included in Lambda deploying the package to create one’s segments of the trace, annotate one’s marks, or view the trace segments for various downstream calls that are made from Lambda function. X-Ray SDKs are presently available for Node.js and Java. Visit the Troubleshooting applications based on Lambda to learn more. AWS X-Ray rates shall apply.