http://www.postgresql.org/docs/9.4/static/different-replication-solutions.html http://www.postgresql.org/docs/9.4/static/different-replicat... Async Multimaste

http://www.postgresql.org/docs/9.4/static/different-replication-solutions.html http://www.postgresql.org/docs/9.4/static/different-replicat... Async Multimaster is in the list of replication solutions. I have not personally implemented it myself. Edit, As I am reading this more closely it may be listing third party implementations and is not 'out of box'