DynamoDB needs setting up some as environment variables. AWS Access Key ID: "fakeMyKeyId" AWS Secret Access Key: "fakeSecretAccessKey" https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/DynamoDBLocal.DownloadingAndRunning.html
unmeshjoshi/dynamodbkafka
A quick example of processing kafka messages to update dynamodb records with optimistic locking retries
Java