Lambda triggers other lambdas

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Lambda triggers other lambdas

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Last edited Apr 3, 2018

Created on Apr 3, 2018

This example shows how one AWS Lambda function orchestrates two other Lambda functions to compose a departure response. The `get-departure.js` handler receives query parameters for an `id` and `date`, then invokes `get-flight` and `get-forecast` functions concurrently using the AWS SDK’s `Lambda.invoke` API with `InvocationType: "RequestResponse"`. It uses Bluebird’s `Promise.all` to await both payloads, parses each JSON response, and returns a combined `departure` object containing the forecast and flight data. The code demonstrates a saga-style pattern for coordinating dependent serverless calls.

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