[okket]

See discussion from 3 days ago (69 comments): https://news.ycombinator.com/item?id=12576116

TL;DR: It is not in mainline, but it does not need a patch anymore. You need to bring your own conflict resolution logic.

[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.

[anarazel]

BDR has last-updated-wins builtin and conflict handlers that can be called if that's not what you need.