RE: decreased caching efficiency?

["Roeland M.J. Meyer" <rmeyer () MHSC com>]

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."