Very interesting talk, but being in the process of building a similar architecure at the moment, i think the person dismiss OT and other kind of merging technic

Very interesting talk, but being in the process of building a similar architecure at the moment, i think the person dismiss OT and other kind of merging technics a bit too fast. "Latest to write wins" isn't manageable in every case , such as google doc, or github. You sometimes needs locking and atomic complex updates for which a stack only built on top of mongo and pojo, and no other knowledge of the relations between data parts may be insufficient. But i sure hope they'll prove me wrong and solve the problem in a generic way.