On Tue, 2006-03-14 at 23:04 +0100, Ard Schrijvers wrote:
> > Yeah, good call. I was actually thinking of something that could
> > override the caching on an entire pipeline. Then it could be
> > used for
> > other things like grabbing rss feeds or something. For example:
> >
> > <map:pipeline type="forcedcaching">
> > <map:parameter name="expires" value="access plus 1 hours"/>
> > ...
> > </map:pipeline>
> >
>
> Don't build it yourself!! There is just a pipeline exactly doing what you
> want: Use the exiring pipeline:
>
> <map:pipe logger="sitemap.pipes.expires" name="expires"
> src="org.apache.cocoon.components.pipeline.impl.ExpiresCachingProcessingPipeline">
> <parameter name="cache-expires" value="180"/> <!-- default cache time = 3
> min -->
> </map:pipe>
>
> Now use :
> <map:pipeline type="expires" internal-only="false">
> <map:parameter name="cache-key" value="{define your own cache key here:
> if you leave it empty the url without request-params will be used as
> cache-key}"/>
> <map:parameter name="cache-expires" value="60"/> <!-- override here your
> default expire -->
> <map:match ....
> your matchers here...
>
> That is all:
>
> In the cache-key you can also take request-params like: <map:parameter
> name="cache-key" value="{0}-{request-param:page}" /> <!-- {0} = pipeline -->
>
> There is certainly no need to write your own caching mechanism for
> this...if this cached result is not returned fast enough from cocoon,
> since cache-key lookups and validity checks are still done we have a
> (probably not yet committed to cocoon) version of the
> ExpiresCachingProcessingPipeline performing MUCH faster for complex
> pipelines.
This is interesting, I have been thinking about something like that
myself. Any chance of contributing it to Cocoon?
--
Bruno Dumon http://outerthought.org/
Outerthought - Open Source, Java & XML Competence Support Center
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