Re: Listen / Notify rewrite

From: "Greg Sabino Mullane" <greg(at)turnstep(dot)com>
To: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Listen / Notify rewrite
Date: 2009-11-13 17:35:11
Message-ID: 2e057b04ebcd0a0a449549e5afe39dd0@biglumber.com
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> This is BS. The problem is not that someone might do something stupid
> with this feature. The problem is that we're making these other use
> cases into requirements which will influence the design. This is a
> classic "feature creep" situation and the result is normally products
> which solve none of the use cases especially well.

Feature creep? The payload has been on the roadmap for a long time. I don't
recall anyone objecting when Andrew was working on the next version of
Listen/Notify around what is probably a couple of years ago now.

> Remember this queue has to live in shared memory which is a fixed size
> resource. If you're designing a queue mechanism then you would
> naturally use something like a queue or priority queue.

Right, but we're not discussing a queue, we're discussing the listen/notify
system. If people want to mis-use it as a queue when they should be using
something else, so be it. Talk of efficiency also seems silly here - using
shared memory is already way more efficient than our current listen/notify
system.

- --
Greg Sabino Mullane greg(at)turnstep(dot)com
PGP Key: 0x14964AC8 200911131234
http://biglumber.com/x/web?pk=2529DF6AB8F79407E94445B4BC9B906714964AC8
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