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Getting the Request ID of a Lambda Invocation when Using Promises With the AWS SDK

neverendingqs profile image Mark Tse Originally published at on ・1 min read

Every invocation of an AWS Lambda function is associated with a request ID. Searching the CloudWatch logs with the request ID is the quickest way to find the logs of a given invocation.

To get the request ID when using the JavaScript AWS SDK, you can access the $response property of the response:

const AWS = require('aws-sdk');
const lambda = new AWS.Lambda();

const response = await lambda.invoke({

const requestId = response.$response.requestId;

The entire response object from the HTTP request is available to you via the $response object. Also, the $response object is available across almost all API calls, not just lambda.invoke().promise().

If you ever want to track down the results of a single invocation among many, consider logging the response ID.

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