In order to build Docker images for Lambda functions with CDK on ARM or other non-Intel platforms, but want the Lambda to be on an x8664 platform, use the platform parameter…

This happens sometimes with Dockerized Lambdas. I have no idea why, but fixing it usually consists of rebuilding and re-pushing the docker image, redeploying it to the Lambda,…

Redeploying a CDK stack with a Lambda function that relies on a Docker image in ECR won’t necessarily update the function with a newly pushed image. Instead, use the Lambda…

You can send exception feedback from a Lambda to an API Gateway API either by raising a Python exception and handling it via a mapping template, or return a specific set of…

If you have a Docker based Lambda that is defined in some directory and there are assets that the Lambda needs in the parent directory, fromimageasset() takes directory and…

In order to invoke a Lambda asynchronously, pass InvocationType=“Event” to the invoke call. This is useful for, among other things, a hub/message routing Lambda that calls…

A Lambda triggered by an API has to return a dictionary with certain keys and values in order to not cause an error in execution (e.g. “malformed lambda proxy response”). These…

same: AWS Lambda Return Values for API Triggering, To Build a Lambda from a Dockerfile in CDK

To set up a Dockerfile for a Lambda function that relies on non-AWS base images, you have to include the Python package awslambdaric in your requirements and install it. Then,…