Re: SMTP slow???

[drummond@xxxxxxxxxx (Rik Drummond)]

Is not the issue responsibility rather than speed?


In the messaging paradigm - store and forward- a third party may be (not
always) responsible for the message delivery.... and you only know for sure
LATER whether it got there or not.....while in the ssl/http case - one is
always connected and knows instantly whether responsibility was taken at
the other end for receipt of the transaction.

Example: In the type of transactions Chrysler is doing it is more important
that it ALWAYS
       be there ...in say... 5 minutes, rather than be there 95% (normal
distribution: approx. a
       sigma 3) of the time with in 1/2 minutes, with outriggers of say
10-15 minutes.  Tight
       requirements are only doable if you ALWAYS know the status and
ALWAYS have
       responsibility till the hand-off.

      What you don't have responsibility for -- you often can't control.


Messaging based protocols have their place just as RPC type (http)
protocols have their place.

Important point. A lot of work has gone on in the financial community to
put in place Message-type-RPC
            such as  IBM'S MQ Series. This, kind of a merger between  RPC
and Store-and-Forward, have
            a solid place in the arena of transactions across multiple
distributed servers........like ...real time
            EDI...vs. message... based EDI.

That's a separate issue ....later....Rik






>At 08:45 AM 5/29/96 -0400, Robert Moskowitz wrote:
><<SNIP>>
>>Actually, my studing of HTTP (sniffer traces and the like) has shown me a
>>model for using HTTP for "direct control".  This involves doing the client
>>thing directly (unless the browser has good APIs).  The server as is, even
>>the CERN server has what it takes to run the translator.
>>
>>We did a simple proof of concept.  If you'd like I can find out if I can
>>send the HTML, CGI and C stuff to the list.  No shots allowed at how very
>>rough it is.  It was done to see if the protocol works as we thought.
>>
>
>Sounds interesting.  I, for one, would be interested in seeing your work.
>
>Regards,
>dave_d
>======================================
>|   David Darnell
>|   SysTrends, Inc.
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