controlling cocoon cache per pipeline?

["Tsui, Alban" <Al...@COGNOS.com>]

I have a pipeline in sitemap for generating svg graphics.

Everytime a user accesses it, it gets called but is there anyway to cache
the grpahics so that next time, a "cached-file" gets sent instead of going
through the xsp, transform, serializer steps to generate a new one?

Or can we generate those files dynamically and get them written to the disc
while serving the image when the pipeline first gets called, then we can
retrieve the file into the piple line next time it is called? Hope I am
clear on my question!

Also is it possible to set up a pipeline so that when it is called, cocoon
will clear "certain" cache from the disc/memory? I might need to do that
once per day if I can cache those images...

I am using the latest release of Cocoon 2.0.1 running on Tomcat 4.0.1.

Regards
Alban

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RE: controlling cocoon cache per pipeline?

[giacomo <gi...@apache.org>]

On Tue, 12 Feb 2002, Vadim Gritsenko wrote:

> > From: Tsui, Alban [mailto:Alban.Tsui@COGNOS.com]
> >
> > I have a pipeline in sitemap for generating svg graphics.
> >
> > Everytime a user accesses it, it gets called but is there anyway to
> cache
> > the grpahics so that next time, a "cached-file" gets sent instead of
> going
> > through the xsp, transform, serializer steps to generate a new one?
>
> Pipeline is cached automatically when every step in the pipeline can be
> cached.

Read: When every step in the pipeline can be cached.

As you mentioned XSP (which are not cachable by default) I suggest
adding a generateKey method to your XSP (there are cocoon samples for
it in src/webapp/docs/samples/xsp/cacheable.xsp).

Giacomo

>
>
> > Or can we generate those files dynamically and get them written to the
> disc
> > while serving the image when the pipeline first gets called, then we
> can
> > retrieve the file into the piple line next time it is called? Hope I
> am
> > clear on my question!
>
> Yes, you can come up with something like this, but why if Cocoon already
> caches all the pipelines automatically (see above)?
>
>
> > Also is it possible to set up a pipeline so that when it is called,
> cocoon
> > will clear "certain" cache from the disc/memory? I might need to do
> that
> > once per day if I can cache those images...
>
> This is also done automatically as soon as pipeline is requested and
> it's content has been changed.
>
> Vadim
>
> > I am using the latest release of Cocoon 2.0.1 running on Tomcat 4.0.1.
> >
> > Regards
> > Alban
> >
> > This message may contain privileged and/or confidential information.
> If you
> > have received this e-mail in error or are not the intended recipient,
> you
> > may not use, copy, disseminate or distribute it; do not open any
> > attachments, delete it immediately from your system and notify the
> sender
> > promptly by e-mail that you have done so.  Thank you.
>
>
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RE: controlling cocoon cache per pipeline?

[Vadim Gritsenko <va...@verizon.net>]

> From: Tsui, Alban [mailto:Alban.Tsui@COGNOS.com]
> 
> I have a pipeline in sitemap for generating svg graphics.
> 
> Everytime a user accesses it, it gets called but is there anyway to
cache
> the grpahics so that next time, a "cached-file" gets sent instead of
going
> through the xsp, transform, serializer steps to generate a new one?

Pipeline is cached automatically when every step in the pipeline can be
cached.


> Or can we generate those files dynamically and get them written to the
disc
> while serving the image when the pipeline first gets called, then we
can
> retrieve the file into the piple line next time it is called? Hope I
am
> clear on my question!

Yes, you can come up with something like this, but why if Cocoon already
caches all the pipelines automatically (see above)?

 
> Also is it possible to set up a pipeline so that when it is called,
cocoon
> will clear "certain" cache from the disc/memory? I might need to do
that
> once per day if I can cache those images...

This is also done automatically as soon as pipeline is requested and
it's content has been changed.

Vadim

> I am using the latest release of Cocoon 2.0.1 running on Tomcat 4.0.1.
> 
> Regards
> Alban
> 
> This message may contain privileged and/or confidential information.
If you
> have received this e-mail in error or are not the intended recipient,
you
> may not use, copy, disseminate or distribute it; do not open any
> attachments, delete it immediately from your system and notify the
sender
> promptly by e-mail that you have done so.  Thank you.


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