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Re: Listen / Notify - what to do when the queue is full

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Jeff Davis <pgsql(at)j-davis(dot)com>, Joachim Wieland <joe(at)mcknight(dot)de>, Greg Smith <greg(at)2ndquadrant(dot)com>, Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com>, "Florian G(dot) Pflug" <fgp(at)phlo(dot)org>, Josh Berkus <josh(at)agliodbs(dot)com>, pgsql-hackers(at)postgresql(dot)org, Arnaud Betremieux <arnaud(dot)betremieux(at)keyconsulting(dot)fr>
Subject: Re: Listen / Notify - what to do when the queue is full
Date: 2010-02-09 22:30:29
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
On Tue, Feb 9, 2010 at 4:51 PM, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> wrote:
> Jeff Davis <pgsql(at)j-davis(dot)com> writes:
>> Looking at the documentation, it appears that all of the server
>> encodings represent 7-bit ascii characters using the same 7-bit ascii
>> representation. Is that true?
> Correct.  We only support ASCII-superset encodings, both for frontend
> and backend.
> Limiting NOTIFY payloads to 7-bit would definitely avoid the issue.
> The question is if that's more of a pain than a benefit.

I think it's a reasonable restriction for now.  We have limited time
remaining here; and we can always consider relaxing the restriction in
the future when we have more time to think through the issues.  It'll
still be a big improvement over what we have now.


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