After deployment, add an item to the DynamoDB table. Go to the CloudWatch Metrics for the deployed Kinesis Data Stream. You will see incoming record metrics for the item data.
Cleanup
1. Delete the stack: npx cdk destroy.
2. Confirm the stack has been deleted: aws cloudformation list-stacks --query "StackSummaries[?contains(StackName,'STACK_NAME')].StackStatus".