Very interesting! I particularly like the integrated admin backend -- should save a lot of time. What database are you using to power all of this?
Currently we are using Redis to make the service as fast as possible. Redis gives us a lot of power to improve our query engine. More features on BQL (Backbeam Query Language) are planned so you can make very complex queries very fast. This is mandatory for mobile applications. Other solutions offer very poor query engines so many times you need to do several requests in your mobile application in order to fetch all the data you need. We work hard to avoid that.
For big projects (> 50Gb data) we are going to combine Redis with a disk-based database. We are testing this integration right now.