I like the idea. A fews ago we needed to write a local cache for our
total system framework to create a single source API query for all of
our apps within the framework using DNS. The cache database was
prepared with a query frequency field (QFF) with the idea in the future
to come up with come correlation where an TTL override can be used.
In other words, if the QFF is low, then we just follow the TTL time to
requery an expired recording. If the QFF was high, then this is where a
"HAMMER" time idea would kick in.
I would venture that the efficiency or payoff of a HAMMER time is lower
when the TTL is high. So its payoff comes into play when there are low
TTL values.
So possibly, what the HAMMER draft can include is a set of boundary
conditions or TTL range for when the HAMMER time is applicable. I think
a formula can be created.
--
HLS
On 7/1/2013 5:43 PM, Warren Kumari wrote:
Hi there,
We would like to draw your attention to a new draft.
If describes a simply optimization that, with minimal to no state, keeps
popular records in recursive server's caches.
W
Begin forwarded message:
From: [email protected]
Subject: New Version Notification for draft-wkumari-dnsop-hammer-00.txt
Date: July 1, 2013 5:40:44 PM EDT
To: Roy Arends <[email protected]>, Suzanne Woolf <[email protected]>, Warren Kumari
<[email protected]>
A new version of I-D, draft-wkumari-dnsop-hammer-00.txt
has been successfully submitted by Warren Kumari and posted to the
IETF repository.
Filename: draft-wkumari-dnsop-hammer
Revision: 00
Title: Highly Automated Method for Maintaining Expiring Records
Creation date: 2013-07-01
Group: Individual Submission
Number of pages: 5
URL:
http://www.ietf.org/internet-drafts/draft-wkumari-dnsop-hammer-00.txt
Status: http://datatracker.ietf.org/doc/draft-wkumari-dnsop-hammer
Htmlized: http://tools.ietf.org/html/draft-wkumari-dnsop-hammer-00
Abstract:
This document describes a simple DNS cache optimization which keeps
the most popular records in the DNS cache.
No man is an island, But if you take a bunch of dead guys and tie them
together, they make a pretty good raft.
--Anon.
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