From: Dan Cross <cross@math.psu.edu>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] Typesetting
Date: Wed, 17 Jan 2001 15:52:45 -0500 [thread overview]
Message-ID: <200101172052.PAA11155@augusta.math.psu.edu> (raw)
In-Reply-To: <200101170255.f0H2twg01506@egon>
In article <200101170255.f0H2twg01506@egon> you write:
>> Well, I disagree that it simplifies something which is already simple.
>> Consider creating ``sessions'' over HTTP as an example; I think the
>> methods to do this are ad hoc and complex, if not entirely broken.
>> Using file semantics makes this much easier.
>
>I agree that the current methods for HTTP sessions are poor, but I
>don't see how file/filesystem semantics improves the situation. Care
>to explain?
Sure. My original post outlined an idea for using files as endpoints
for IPC in a larger distributed system. Ie, open a file, you're actually
talking to a process on another system. Plan 9, of course, already does
this, and Unix has a more limited versions (named pipes, Unix domain
sockets though they're more complex to work with).
Given that, sessions become simple: Open a file, start a session. Close
the file, end the session.
Implementation wise, it's probably more difficult than, eg, cookies, but
it pushes the complexity down a layer (into the filesystem) where the
application programmer doesn't see it.
As an aside, assuming you can have byte-oriented file operations, the
level of interactivity at that point can go up in the same way it would
going from a 3270 to a VT100 in the terminal world.
- Dan C.
next prev parent reply other threads:[~2001-01-17 20:52 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-01-11 2:09 William Staniewicz
2001-01-10 23:32 ` Dan Cross
2001-01-12 0:31 ` Steve Kilbane
2001-01-16 22:37 ` Dan Cross
2001-01-17 2:54 ` chad
2001-01-17 12:33 ` Micah Stetson
2001-01-17 20:52 ` Dan Cross [this message]
2001-01-17 23:05 ` Steve Kilbane
2001-01-22 18:00 ` Dan Cross
2001-01-11 9:50 ` Douglas A. Gwyn
2001-01-11 10:06 ` Boyd Roberts
2001-01-11 18:32 ` Dan Cross
2001-01-12 9:32 ` Randolph Fritz
-- strict thread matches above, loose matches on Subject: below --
2001-01-11 4:03 okamoto
2001-01-10 18:34 forsyth
2001-01-10 17:47 rob pike
2001-01-10 17:24 Laura Creighton
2001-01-10 17:34 ` Boyd Roberts
2001-01-10 19:58 ` Dan Cross
2001-01-12 9:32 ` Andy Newman
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