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From Stefano Mazzocchi <>
Subject Re: Improved the feeled performance!
Date Fri, 18 Jan 2002 14:04:01 GMT
Berin Loritsch wrote:
> Stefano Mazzocchi wrote:
> > Thanks for the patch, but now I wonder: should we make this a more
> > general component?
> >
> > I mean, sort of a 'heartbeat' thread in background does all sort of
> > time-dependent things (cleaning up the cache, flush buffers, and so on)
> >
> > What do you people think?
> I am working on that in Excalibur.  This is the whole push for asynchronous
> management I have been trying to sell everyone on.  I already have some
> Queues set up that are very efficient, the next part is writing the code
> that manages the CommandQueue using a ThreadPool.  The implementation will
> allow for 3 types of "Commands" to be run:
> 1) Run now commands--add the callback to the queue and at the next oportunity
>     we execute the command (run only once).
> 2) Delayed run-once commands--add the callback to the queue and after a
>     specified period of time we execute it.
> 3) Repeated delayed commands--add the callback to the queue and after a
>     specified period of time we execute it.  After that we place it back
>     in the queue with the new delay.
> Commands in case 1 would be like asynchronous initialization code.  It is
> feasible to have a finite number of threads initializing all the components
> asynchronously.  This would speed the overall setup time for Cocoon.  Some
> Components are quick to set up, while others are more expensive.
> Commands in case 2 would be for cache management, or automatically expiring
> a resource after a certain period of time.
> Commands in case 3 would be for routine maintenance of pools, etc.
> This is also part of a generic Container implementation that I am creating
> that takes advantage of all this power--and makes it easier to create
> new Containers.

Way Cool.

Please, let us know when you are finished and how to use it.

Stefano Mazzocchi      One must still have chaos in oneself to be
                          able to give birth to a dancing star.
<>                             Friedrich Nietzsche

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