with the introduction of M Parameter, a new class of use cases became Possible in PowerBI, Currently it is possible to send an M Parameter and get back some heavy calculation done by the Source Datab...
Currently, the Power BI service may temporarily cache result sets from queries in DirectQuery mode. This behavior is not user-controlled, and may lead to inconsistent results when the underlying data is changing rapidly. It would be desirable to make the caching behavior user-configurable on a per-dataset basis to provide the benefits of caching when they are acceptable and provide greater consistency when it is required.
