Re: What is a caching name server?

[David Birnbaum]

nscd is a Solaris daemon (perhaps other OSs as well) that caches 
gethostbynam()/gethostbyaddr() lookups (and others of that ilk), but not all of 
the DNS lookups that SpamAssassin uses (I think SpamAssassin may specifically 
bypass some of those by use Net::DNS directly instead of the built-in OS 
resolver routines).

nscd is controlled by parameters in /etc/nscd.conf.  You may see big performance 
gains for IP and name lookup if you tune the negative caching paremters up on 
busy mail servers, in any case.

David.
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On Fri, 20 May 2005, Gene Heskett wrote:
On Friday 20 May 2005 01:15, [EMAIL PROTECTED] wrote:
Hello list,
in several posts I have noticed people refer to a "caching
nameserver". What exactly is that?  Would BIND 9.3.1 qualify?  Any
advice would be greatly appreciated.
Regards,
Devin
On my systems, there is an 'nscd'.
Is this not a Name Service Caching Daemon?  Docs seem to be sparse for
it here though.
--
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