Controlling cache size

[Barry Margolin]

In article <aac678$5ap at pub3.rc.vix.com>, John Fox  <jjf at mind.net> wrote:
>
>Hi!  My question concerns a BIND 8.3.1-REL installation.
>
>We've a nameserver with a fairly limited amount of RAM (64MB).  Left 
>unattended, its cache grows to a fairly unwieldy size, drastically
>slowing lookups and impacting upon customer services.  I have been
>charged with finding a remedy to this situation.
>
>I immediately siezed upon the 'datasize' option, but was told that
>this does not relate to cache-management per se, and then when the
>datasize limit is hit, the effect will be that named can't get
>any more memory, thus not being able to perform further lookups --
>which would again bring us to a situation in which customer services
>are (greatly) delayed.  Not good!

Actually, it will most likely abort.  If you combine this with a script
that automatically restarts named when it aborts, you have a solution to
your problem.

BIND 8 doesn't have any other cache limiting mechanism.  I think BIND 9 has
added this.

-- 
Barry Margolin, barmar at genuity.net
Genuity, Woburn, MA
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