Real time data refresh using REST api Azure DocumentDB as source

Hi,

Recently, there is new REST API available to get real time data.

https://powerbi.microsoft.com/en-us/documentation/powerbi-developer-embed-sample-app-owns-data/

I am using user owns data to create "Report". I need to know does it support Document DB.

If I create a report using Azure document DB, will I get real time data?

Also, is there any data limitation (data, bandwidth etc.) using REST API?