Hi I have written a custom resource provider for AWS's dynamoDB [0] for accessing its data as a sling resource. You can find the implementation at [1].
Right now it just supports read access to dynamodb but I would be adding write support soon to it. The implementation is quite basic. It would be very helpful if you could please review it and add your valuable comments to it. Thanks [0] - http://aws.amazon.com/dynamodb/ [1] - https://github.com/satyadeep1980/SlingDynamo