When using fromrawdata in PynamoDB, you have to pass in the DynamoDB dict structure ({“attributename”: {“S”: “value”}), not a plain dictionary. When 6.0.0 comes out, there will…

Unlike in AWS Lambda code, in Sagemaker training jobs using custom Python code in Docker containers logging won’t work unless a stream handler is specifically added to the logger.

At the end of a Dockerfile that defines a container for a Sagemaker training job, you have to define the SAGEMAKERPROGRAM environment variable. It needs to point directly to…

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…

To handle errors within a Step Function, you can use a Catch block that hands off execution to an Error State. This State can be a Task type, which can (among other things)…

There are a number of avenues to explore for troubleshooting a CDK deployment.

This is the construction of the base URL of an API Gateway API: https://{restapiid}.execute-api.{region}.amazonaws.com/{stagename}/