[lug] DNS Time

[Pedersen, Michael J]

Of course, there is a downside to this: Resetting the TTL won't clear the
cache for people who've already done the lookup.  In other words, you're
stuck until the cache expires.

> -----Original Message-----
> From: Walter Pienciak [mailto:walter at frii.com]
> Sent: Friday, December 03, 1999 12:10 PM
> To: lug at lug.boulder.co.us
> Subject: Re: [lug] DNS Time
> 
> 
> On Fri, 3 Dec 1999, Shannon M. Johnston wrote:
> 
> > What determines how long a web address will remain in the DNS cache
> > before it's reset?
> > I'm trying to move some sites to a new server and while it show up
> > immediately in my own network, it seem to take a very long time for
> > people on the internet.
> > What gives? Does anybody know?
> > 
> > Thanks,
> > Shannon
> 
> Wow, I'm afraid to answer after the flurry of FTP answers this
> morning, but here goes.
> 
> The TTL (time to live) field limits the cache life of an answer.
> 
> If you fire up nslookup, and then
> 
>     > set debug
>     > your_favorite_hostname
> 
> some interesting stuff comes back for you to ponder.
> 
> Walter
> 
> 
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