Ordered atomic broadcast capabilities to Riak

This is awesome. I recently played around with riak and thought about using it in a project. What I really appreciate is the simple key-value interface that riak exposes while staying away from assumptions about your data.

It would be awesome if we now could implement strong guarantees like uniqueness using riak_zab in a distributed manner.

Relevant blog post from a few weeks ago that talks about the use cases this code makes possible:

http://nosql.mypopescu.com/post/4633402570/riak-zab-zookeepe...

Interesting. I'm wondering if this can be used to keep a monotonically increasing guaranteed unique counter? Riak isn't currently suited for that type of thing from my limited experience.