[31819] in North American Network Operators' Group
RE: decreased caching efficiency?
daemon@ATHENA.MIT.EDU (Roeland M.J. Meyer)
Sun Oct 22 00:30:18 2000
Message-ID: <1148622BC878D411971F0060082B042C058DE3@hawk.lvrmr.mhsc.com>
From: "Roeland M.J. Meyer" <rmeyer@MHSC.com>
To: Christian Kuhtz <ck@arch.bellsouth.net>, nanog@merit.edu
Date: Sat, 21 Oct 2000 21:29:34 -0700
MIME-Version: 1.0
Content-Type: text/plain
Errors-To: owner-nanog-outgoing@merit.edu
Christian,
I invite you to www.photoloft.com
Each album is dynamic and the site uses FlashPix technology.
Have fun with it.
> -----Original Message-----
> From: Christian Kuhtz [mailto:ck@arch.bellsouth.net]
> Sent: Friday, October 20, 2000 12:14 PM
> To: nanog@merit.edu
> Subject: Re: decreased caching efficiency?
>
> On Fri, Oct 20, 2000 at 11:59:58AM -0700, Travis Grant wrote:
> [..]
> > Commerce sites are also dependent on dynamic technology
> that cannot be
> > cached. Although you will find sites that are entirely
> static (buy.com &
> > etoys.com) you will generally find that these models are
> based on volume and
> > that the majority of these sites have never seen a dollar
> in profit. However
> > the profitable boutique type sites like eStyle.com, are
> entirely dynamic.
> > Margins are protected by a contractual product line. When
> you place an
> > order, a query verifies inventory prior to final checkout.
> In addition,
> > product pages indicate whether items are in stock or not.
> You cant cache
> > these types of sites.
> [..]
>
> Each and every button, product image etc could be cached,
> regardless of the
> dynamic nature of the website. Images cost cycles, bw.
>
> [..]
> > Most caching implementations will cost way more than the
> bandwidth costs
> > they avoid.
>
> You get no argument there ;-). I never felt that you could
> ever justify
> caching in terms of bandwidth savings. You can only justify
> in terms of
> improving a users experience. And in that sense, you are
> giving considerable
> resources to a content origin, and a free service to them.
>
> That's why the CDN strategy is much more attractive, where
> you have a hosting
> relationship of some kind with the content origin.
>
> [..]
> > load on the DB servers. But TTLs will usually have to be
> set pretty low (2
> > seconds) in order to do this and the technologies will have
> to be catered to
> > web development environments (like cacheflow and ASP).
> [..]
>
> Hmm, if you cache what I suggest above, that's not really
> neccessary... No?
>
> Cheers,
> Chris
>
> --
> Christian Kuhtz
> Architecture, BellSouth.net
> <ck@arch.bellsouth.net> -wk, <ck@gnu.org> -hm
> Atlanta, GA
> "Speaking
> for myself only."
>
