$TTL directive vs. negative cache - 8.2.1

[Barry Margolin]

In article <9956.930046781 at kludge.mpn.cp.philips.com>, Jim Reid
<jim at mpn.cp.philips.com> wrote:

>I personally think that the time to live (positive and negative)
>values shouldn't be as high as a day because that'll mean it can take up
>to 1 day before the rest of the world knows that www.fubar.com has
>been moved. Perhaps TTLs around 1-3 hours would be more appropriate?

Often you know in advance when you're going to renumber things.  You can
lower the normal TTL the day before, so when you change the record it will
be picked up quickly.

-- 
Barry Margolin, barmar at bbnplanet.com
GTE Internetworking, Burlington, MA