DynamoDB Streams

• Ordered stream of item-level modifications (create/update/delete) in a DynamoDB table
• Can be
  • Sent to Kinesis Data Streams
  • Read by AWS Lambda
  • Read by Kinesis Client Library applications
• Data retention for up to 24 hours
• Choose information that will written to stream
  • KEYS_ONLY: only key attributes of the modified item
  • NEW_IMAGE: the entire item after modified
  • OLD_IMAGE: entire item before modified
  • NEW_AND_OLD_IMAGES: both the above
• DynamoDB streams are made of shards, like Kinesis Data Streams
  • AWS will provision shards
• When you enable the streams, only then you will receive record update
• Use cases
  • Analytics
  • React to changes in real-time