[elric]

Sure, a basic ensemble isn't that hard. But securing it is a world of pain and misery.

The ZK development API is also pretty much awful. Apache Curator (which wraps around the ZK API and implements a bunch of common "recipes") makes it less painful, but it really ought to be part of ZK proper.

[accuNum]

God forbid you hit a bug in ZK too, as there are 5 people in the world who properly understand that system - there is nobody to help.