what does "max-ncache-ttl 0;" mean?

Darcy Kevin (FCA) kevin.darcy at fcagroup.com
Wed Mar 2 20:22:23 UTC 2016

I wouldn't be so quick to assume that.

Nota bene this part of the ARM:

"Integers may take values 0 <= value <= 18446744073709551615, though certain parameters (such as max-journal-size) may use a more limited range within these extremes. In most cases, setting a value to 0 does not literally mean zero; it means 'undefined"' or 'as big as possible', depending on the context. See the explanations of particular parameters that use size_spec for details on how they interpret its use."

So, it might actually mean "as big as possible".

Consult the source code to be sure.
								- Kevin

Kevin Darcy
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-----Original Message-----
From: bind-users-bounces at lists.isc.org [mailto:bind-users-bounces at lists.isc.org] On Behalf Of Tony Finch
Sent: Wednesday, March 02, 2016 8:29 AM
Cc: bind-users at lists.isc.org
Subject: Re: what does "max-ncache-ttl 0;" mean? 

MURTARI, JOHN <jm5903 at att.com> wrote:
> So far, all the postings I've seen just echo what he already said (and 
> knows).  The question is - what happens when you set it to ZERO?
> I'm wondering myself - anyone have a real answer?

The code says zero means zero, so in effect it would disable negative cacheing.

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