Folks, am working on a real-time-ish application - say, a complex form
of chat - in which a few different processes will generate data and
one or more http clients will need to be notified. (Something like
this was used at http://ajaxian.com/archives/the-brot...-shared-mosaic
-- but that appears to be very specific to their problem area and I'm
interested in something more generic.

"Slow load" (see http://www.obviously.com/tech_tips/slow_load_technique)
seems a good mechanism to notify the client, but the simple form of
that needs build up to accommodate events of several types from a
number of sources.

It looks to me that application-level script-to-script notification is
needed - and exists (see http://www.leosingleton.com/projects/code/phpapp/)
plus a queue mechanism, which also exists (see http://www.phpclasses.org/browse/file/5025.html)

I've googled for it and failed to find a packaging of these elements.
I'm interested in hearing about any that might exist, before I try to
roll my own. Thanks, all.

AS

On 20 Jan, 18:57, ashore <shor...@gmail.com> wrote:
> Folks, am working on a real-time-ish application - say, a complex form
> of chat - in which a few different processes will generate data and
> one or more http clients will need to be notified. (Something like
> this was used athttp://ajaxian.com/archives/the-broth-ajax-shared-mosaic
> -- but that appears to be very specific to their problem area and I'm
> interested in something more generic.
>
> "Slow load" (seehttp://www.obviously.com/tech_tips/slow_load_technique)
> seems a good mechanism to notify the client, but the simple form of
> that needs build up to accommodate events of several types from a
> number of sources.
>
> It looks to me that application-level script-to-script notification is
> needed - and exists (seehttp://www.leosingleton.com/projects/code/phpapp/)
> plus a queue mechanism, which also exists (seehttp://www.phpclasses.org/browse/file/5025.html)
>
> I've googled for it and failed to find a packaging of these elements.
> I'm interested in hearing about any that might exist, before I try to
> roll my own. Thanks, all.
>
> AS

I'd start by forgetting about the suggestions in
http://www.leosingleton.com/projects/code/phpapp/ this is *so* not the
way to solve either your problem or the one described on the page.

Most message queueing systems are based around providing transactional
integrity - and you're going to get tied in knots trying to get this
to work for a browser based system ( where you can't guarantee
notification of the end of a session).

Sorry I've got nothing positive to add - but I can't see any solution
other than starting from scratch - but yes, using ajax to poll a
deferring page is probably the way to go.

C.