Hands-On Serverless Computing

DynamoDB Trigger

Amazon DynamoDB is a fast NoSQL database for all applications that are looking for single-digit-millisecond latency at scale. It is a fully managed cloud database provided by AWS. You can learn more about it at https://aws.amazon.com/dynamodb/.

You can invoke your AWS Lambda functions as triggers in response to updates that are made to DynamoDB tables. To be able to leverage this feature, you would first need to enable Amazon DynamoDB streams for your Amazon DynamoDB table. With DynamoDB streams enabled, AWS Lambda polls the stream and invokes your function to process the data from the stream. You can configure AWS Lambda to read data from streams in batches.

Here is a screenshot of an AWS Lambda configuration to poll a records ...