pglogical (<a href="http:&#x2F;&#x2F;2ndquadrant.com&#x2F;en-us&#x2F;resources&#x2F;pglogical&#x2F;" rel="nofollow">http:&#x2F;&#x2F;2ndquadrant.com&#x2F;en-us&#x2F;resources&#x2F;pglogical&#x2F;</a>) claims to allow cross version upgrades from 9.4 to 9.5 with minimal downtime, but the documentation seems fairly light-on.<p>Has anyone come across a guide to using it for upgrades?