AWS DynamoDB Metadata-CodePudding

Is there a way to add custom metadata on DynamoDB when performing such operations as PutItem, Query, Scan, GetItem, etc.? Where I can add and read those metadata?

Example:

"sample-key": "sample-value"

I think the S3 has the Metadata field on its UploadInput. While the SQS has the MessageSystemAttributeValue.

CodePudding user response：

This is not possible in DynamoDB like how you do it in S3 or SQS.

For DynamoDB, you simply need to add an attribute to the item when you put/update it, in this case I call the attribute metadata:

  Item={
            'pk': '[email protected]',
            'sk': 'engineer',
            'username': 'joses',
            'first_name': 'Jose',
            'last_name': 'Schneller',
            'name': 'Jose Schneller',
            'age': 27,
            'address': {
                'road': '12341 Fish Rd',
                'city': 'Freeland',
                'pcode': 98249,
                'state': 'WA',
                'country': 'USA'
            }, 
            'metadata':{
                'sample-key': 'sample-value'
            }
}

This means you get the items metadata each time you read the item.