Actually I want to implement validations on AWS DynamoDB table items, which should prevent records to insert/update if rules break for an item fields.
Is it possible?
Or Can we create a trigger lambda for dynamoDB table, that trigger before insert/update. So that we can check for validation rule and handle this.
It's better to use API Gateway to validate your model before the lambdas that actually inserts/updates data into dynamoDB is triggered.
I've implemented a sample of that, public available on github: https://github.com/adrianosastre/DynamoDB-CDK-Hands-On
That project is explained in more details on the article: https://dev.to/adrianosastre/aws-serverless-and-the-dynamodb-single-table-design-hands-on-with-cdk-v2-38d0
