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From Bertrand Delacretaz <>
Subject Re: new PDF caching sample - unable to get caching to work
Date Fri, 02 May 2003 10:12:21 GMT
Le Vendredi, 2 mai 2003, à 10:28 Europe/Zurich, Carsten Ziegeler a  
écrit :

> ...Can you see, that the output of the generator is cached?

Yes, it is - the page content contains a timestamp created by the  
Generator, and it stays the same for the duration that my Generator  
sets using a DeltaTimeValidity.

> It seems that your stylesheet transformation prevents the caching,
> which means that the transformer might get a different key/validity
> each time it is used.

Ok, I found out more, here's what I see in the log:

Found cached response for 'cache-test-ONE-a-250.pdf' using key:  

IIUC correctly the key contains element from all three pipeline  
components (FOPSerializer uses "1" for the key, I'm going to change  
this to a more descriptive constant).

But right after this comes:

AbstractCachingProcessingPipeline: Cached content is invalid for  

But this doesn't tell me who's saying that the content is invalid.  
Let's fire up the debugger ;-)

> For caching the sitemap components are asked one after the other
> if they support caching, so if the transformer is not cacheable
> your serializer is never called.

Ok, thanks for the clarification!


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