<!--
title: Serverless Framework - AWS Lambda Events - Kinesis & DynamoDB Streams
menuText: Kinesis & DynamoDB
menuOrder: 2
description:  Setting up AWS Kinesis Streams and AWS DynamoDB Streams Events with AWS Lambda via the Serverless Framework
layout: Doc
-->

<!-- DOCS-SITE-LINK:START automatically generated  -->
### [Read this on the main serverless docs site](https://www.serverless.com/framework/docs/providers/aws/events/streams)
<!-- DOCS-SITE-LINK:END -->

# DynamoDB / Kinesis Streams

This setup specifies that the `compute` function should be triggered whenever the corresponding DynamoDB table is modified (e.g. a new entry is added).

**Note:** The `stream` event will hook up your existing streams to a Lambda function. Serverless won't create a new stream for you.

```yml
functions:
  compute:
    handler: handler.compute
    events:
      - stream: arn:aws:dynamodb:region:XXXXXX:table/foo/stream/1970-01-01T00:00:00.000
```

## Setting the BatchSize and StartingPosition

This configuration sets up a disabled Kinesis stream event for the `preprocess` function which has a batch size of `100`. The starting position is
`LATEST`.

**Note:** The `stream` event will hook up your existing streams to a Lambda function. Serverless won't create a new stream for you.

```yml
functions:
  preprocess:
    handler: handler.preprocess
    events:
      - stream:
          arn: arn:aws:kinesis:region:XXXXXX:stream/foo
          batchSize: 100
          startingPosition: LATEST
          enabled: false
```