Comment by dark_ph0enix

We've had a number of very interesting technical challenges along the way to this 2.0 release:

- traffic tiering and balancing based on request's perceived amount of work

- low latency data loading during our calc loop

- implementing a selector framework to unify all the stores used by the application

- redesigning the formula editor to make human friendly yet expressive enough for the most hardcore user (fun UX challenge)

We really ought to start blogging more about these things :D.