what does "max-ncache-ttl 0;" mean?
A. Renald Niswady
renaldre at orion.net.id
Wed Mar 2 07:32:25 UTC 2016
hehehe,
http://www.zytrax.com/books/dns/ch7/hkpng.html#max-ncache-ttl
i found zytrax site is really helpful
Regards
-Renald-
----- Original Message -----
From: "John W. Blue" <john.blue at rrcic.com>
To: "A. Renald Niswady" <renaldre at orion.net.id>, "blrmaani" <blrmaani at gmail.com>
Cc: comp-protocols-dns-bind at isc.org
Sent: Wednesday, March 2, 2016 2:27:49 PM
Subject: RE: what does "max-ncache-ttl 0;" mean?
Now quote your source.
;)
From: bind-users-bounces at lists.isc.org [mailto:bind-users-bounces at lists.isc.org] On Behalf Of A. Renald Niswady
Sent: Wednesday, March 02, 2016 1:23 AM
To: blrmaani
Cc: comp-protocols-dns-bind at isc.org
Subject: Re: what does "max-ncache-ttl 0;" mean?
max-ncache-ttl sets the maximum time (in seconds) for which the server will cache negative (NXDOMAIN) answers (positives are defined by max-cache-ttl ). The default max-ncache-ttl is 10800 seconds (3 hours). max-ncache-ttl cannot exceed 7 days and will be silently truncated to 7 days if set to a greater value. This statement may be used in view or a global options clause.
Regards,
A. Renald Niswady
[NOC-System] Orion Cyber Internet
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----- Original Message -----
From: "blrmaani" < blrmaani at gmail.com >
To: comp-protocols-dns-bind at isc.org
Sent: Wednesday, March 2, 2016 2:13:29 PM
Subject: what does "max-ncache-ttl 0;" mean?
man pages for named.conf says "max-ncache-ttl <integer>" and only talks about default values and max values - no mention of minimum-value.
Does "max-ncache-ttl 0;" mean never cache negative queries (queries resulting in NXDOMAIN) or does it mean cache negative queries forever?
Too lazy to test this option or look bind code :), hence posting here - apologies in advance..!!
Blr
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