Definitely some great feedback, Eduard. Thanks!

Your snippets also look very familiar! I believe I've seen them in a Rest transform class. As I was studying that code I also had a lot of questions. Hopefully I can ask you those questions some time :D 

This approach was definitely a brute force and was restricted to a particular use-case that included a LocalStack instance in Docker so that we weren't interacting with DynamoDB until necessary and that approach had some things that needed to be wrestled with. There are many optimizations on the horizon but I figured I would share just one of the many approaches so that others had a direction from which to work.

Looking forward to picking your brain ;o)