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Re: TCP keepalive support for libpq

From: Tollef Fog Heen <tollef(dot)fog(dot)heen(at)collabora(dot)co(dot)uk>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: TCP keepalive support for libpq
Date: 2010-02-11 17:08:03
Message-ID: 87pr4bya30.fsf@qurzaw.linpro.no (view raw or flat)
Thread:
Lists: pgsql-hackers
]] Robert Haas 

| I've sometimes wondered why keepalives aren't the default for all TCP
| connections.  They seem like they're usually a Good Thing (TM), but I
| wonder if we can think of any situations where someone might not want
| them?

As somebody mentioned somewhere else (I think): If you pay per byte
transmitted, be it 3G/GPRS.  Or if you're on a very, very high-latency
link or have no bandwidth.  Like, a rocket to Mars or maybe the moon.
While I think they are valid use-cases, requiring people to change the
defaults if that kind of thing sounds like a sensible solution to me.

-- 
Tollef Fog Heen 
UNIX is user friendly, it's just picky about who its friends are

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