Re: implementing NOTIFY with message parameter

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)surnet(dot)cl>
Cc: Andras Kadinger <bandit(at)surfnonstop(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: implementing NOTIFY with message parameter
Date: 2005-05-12 15:05:58
Message-ID: 800.1115910358@sss.pgh.pa.us
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Alvaro Herrera <alvherre(at)surnet(dot)cl> writes:
> On Thu, May 12, 2005 at 10:48:50AM -0400, Tom Lane wrote:
>> If you are looking for an existing tool to adapt, I think the sinval
>> messaging mechanism is a FAR better prototype.

> Hmm. The problem is that it's easy to do something if the sinval queue
> fills up -- just reset everybody's cache. But you can't just drop all
> pending notifies if the queue fills up.

I think you can. See previous discussions.

regards, tom lane

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