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Re: Syscaches should store negative entries, too

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Hannu Krosing <hannu(at)krosing(dot)net>
Cc: Peter Eisentraut <peter_e(at)gmx(dot)net>, Thomas Lockhart <lockhart(at)fourpalms(dot)org>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Syscaches should store negative entries, too
Date: 2002-01-30 15:46:25
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Hannu Krosing <hannu(at)krosing(dot)net> writes:
> Are there _any_ tests where it does start to drop stuff ?

> In other words - is the stuff-dropping part tested reasonably recently
> (or at all) ?

Good point.  The drop mechanism is exercised well enough as driven by
shared-cache-invalidation cases, but the case where it's driven by cache
entry count isn't getting tested.

> In other words we should cache Frequently Asked Questions and not
> Frequently Found Answers ;)

Right ;-)

			regards, tom lane

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