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List:       novalug
Subject:    Caching DNS [Was: Re: [ma-linux] Verizon DSL-- Feedback!!]
From:       Joseph S D Yao <jsdy () tux ! org>
Date:       2002-02-28 3:41:11
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On Wed, Feb 27, 2002 at 07:04:47PM -0800, bhaskar karambelkar wrote:
> Some times i face a DNS problem
> the DNS query takes for ever,
> I am thinking of installing a caching DNS server
> so that i can overcome this.
> apart from this i am very happy.

A caching DNS server is not a panacea.  It slows down your update time
for real changes.  It also will not pre-cache things for you; so if you
access a server less frequently than its records time out, you will
still have a delay.  And some delays will be exacerbated, because now
you will have a delay while you wait for the caching server, and it is
delaying waiting for the remote server.

A caching DNS server can sometimes help if a large number of users with
similar interests are searching from it, and thus also feeding into it.
Otherwise, it's more likely to get in the way.

-- 
/*********************************************************************\
**
** Joe Yao				jsdy@tux.org - Joseph S. D. Yao
**
\*********************************************************************/
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