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Re: An alarming trend in METHOD=POST

daemon@ATHENA.MIT.EDU (James Pitkow)
Wed Nov 9 21:12:33 1994

Date: Thu, 10 Nov 1994 02:25:37 +0100
Errors-To: listmaster@www0.cern.ch
Reply-To: pitkow@cc.gatech.edu
From: pitkow@cc.gatech.edu (James Pitkow)
To: Multiple recipients of list <www-talk@www0.cern.ch>

Hello,

Chris Lilley, Computer Graphics Unit on Wed Nov  9 05:42:24 1994 wrote:

> >   Can POST really be cached or added to a hotlist correctly?
> 
> No. That is the point. Things which should not be in a hotlist use a method 
> other than GET, so they can't be put in a hot list. That is, I believe, what 
> TimBL was saying.

   One of the points made earlier was that caching/hotlisting heavily 
paramterized GET commands can be undesireable - i.e. they tend to bump the 
file sizes of hotlists, global histories, etc.  I'm glad that you also 
agree that hotlisting POSTs is worrisome - though, they are doable - just
store the data blob along with the URL in a structured format. Still, the
loci on control determining allowance of this ought to ultimately rest with 
the user.

   Conclusions from discussions:

     use GET for logical independant tasks/retrieval

     currently POSTs should not be hotlisted/cached, though this is doable

     session-based transactions suit interactive tasks whereas stateless 
	transactions suit most paramterized IR tasks

   Any others?

Jim.

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