Fwd: standby stop replicating, then picked back up

-------- Forwarded Message --------
Subject: standby stop replicating, then picked back up
Date: Tue, 7 Nov 2017 13:04:18 -0700
From: chris kim <chrisk(at)propaas(dot)com>
To: pgsql-in-general(at)postgresql(dot)org <pgsql-in-general(at)postgresql(dot)org>

Hello,

I had a standby hang for a while, not replicating, but then it fixed
itself but I'm not sure why it happened in the first place. What would I
look into to see why this happened, or any insight into why is greatly
appreciated.

Thanks,

Chris