On Wed, Sep 30, 2009 at 11:54, Kenneth Marshall <[email protected]> wrote:
> I do not think that the goal of this feature in rsyslog is to
> re-implement resolver functionality but to provide a fast-path
> mechanism to map IP addresses to names for the purposes of logging
> error messages.

Although I agree with your assessment of the goal, the only difference
I see between the two is wording semantics.  An RFC-compliant DNS
cache will, for all intents and purposes, look an awful lot like any
other caching, recursive-only DNS resolver (like dnscache).  The only
major difference would be that it would accept requests via an API as
opposed to through a socket interface.

Regardless, I have to sit on the same side as David and Michael - in
very high-performance environments, I doubt the difference between an
internal cache and an external one is going to be significant.
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