Oh, that's awesome! I just got it working in my project. I've been
keeping my eye out for something like this for months now. Thank you
so much Ard!
Brian
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="">
<parameter name="cache-expires" value="180"/> <!-- default cache time = 3 min -->
</map:pipe>
Now use :
<map:pipeline type="expires" internal->
<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. But in your case, the one present now should do it!
Regards AS
But unfortunately, this is a little beyond my abilities at
the moment.
I'm still trying to figure out simple things with cocoon (and
have been
doing so for a number of months now). So I won't be looking into
anything like this for quite a while.
Thanks for the thoughts though everyone!
Brian
Torsten Curdt wrote:
You could extend the transformer and hook in your caching strategy.
Have a look at other transformers that are cacheable how to do this.
AFAIK, the SQL tranformer is not cacheable.
Best Regards,
Antonio Gallardo.
Brian Maddy wrote:
Does anyone know if it is possible to cache sql queries?
I'm using
the sql transformer a lot and many of the queries don't
need to be
done more than once every few hours. But they're being done all
the time. Is it possible to cache the results somehow with
cocoon's caching system?
cheers
--
Torsten
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