[pgaddict]

Or design the application so that there are no conflicts (e.g. modifying different subsets of users on different nodes).

[jimktrains2]

Which is a form of conflict resolution. It requires the application to be aware of the datastore.

I wonder if, since BDR is just a plugin now, a plugin that used strong consistency guarantees could be built using the same changes that were required for BDR.