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From: Tom Lane <[email protected]>
To: Bee.Lists <[email protected]>
Cc: Submit Postgresql Novice <[email protected]>
Subject: Re: Connections Increasing Slowly
Date: Mon, 22 Jun 2020 22:07:25 -0400
Message-ID: <[email protected]> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<[email protected]>
	<[email protected]>

"Bee.Lists" <[email protected]> writes:
> On Jun 22, 2020, at 4:11 PM, Tom Lane <[email protected]> wrote:
>> Another idea, if you suspect that the idle connections are caused
>> by firewall timeouts or the like, is to enable more aggressive
>> TCP keepalive checking, to ensure the server notices if a client
>> isn't there at all anymore.  See the tcp_keepalives_* settings.

> Who owns the actual connections?  The server allows them, the client
> requests them.  The error I am getting is that the gem I’m using uses a
> connection that’s dropped.

Hmm.  If the client thinks the server dropped the connection, but the
server thinks the connection is still live, that smells strongly of
network-level disconnects.  Does the client let the connection sit idle
for more than a minute or two at a time?  If so I'd bet that some firewall
in between is deciding that the connection is dead and dropping it.
Again, setting the server's tcp_keepalives_* settings could help fix that,
by ensuring that the network connection sees some traffic regularly.

			regards, tom lane

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