title: UUIDs for DynamoDB?
body: <p>Is it possible to get DynamoDB to automatically generate unique IDs when adding new items to a table?</p>
  
  <p>I noticed the Java API mentions @DynamoDBAutoGeneratedKey so I'm assuming there's a way to get this working with PHP as well.</p>
  
  <p>If so, does the application code generate these IDs or is it done on the DynamoDB side?</p>