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From Stefano Mazzocchi <stef...@apache.org>
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.
<stefano@apache.org>                             Friedrich Nietzsche
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