[Catalyst] (Beginner) Plugins

[Alejandro Imass]

On 10/24/06, Yuval Kogman <nothingmuch at woobling.org> wrote:
>
> Ouch, what an insane client...
>
> I hope you're charging them $$$ ;-)


Not really. But they gave me the opportunity to use whatever I wanted so it
was perfect for my first Catalyst project. You now must think that it is I
who is insane!


>
> Use ImageMagic/Imager/GD or whatever to dump out a scalar, and then
> put that in $c->response->body, and set the content type
> appropriately, in something like


Yes, I was thinking along these lines. I had done something similar with
MapServer several years ago, but used random number image files.


>         sub images : Local {
>                 my ( $self, $c, $image ) =3D @_;


[...]

                # make sure to set the caching control headers, like
>                 # expires, cache-control, last-modified, etc
>         }


Thanks for the example!


and make sure that $scaled can behave nicely with Storable.


 Ok.

The reason I suggest doing this and not adjacent files is that the
> key space cardinality ( image * width * height ) is very big. If you
> only need width that's better, i guess, but there's still a
> potential to easily have several hundred versions of a single image.


Yeah well. In either case I have to generate the image, so unless, the
images are re-used
 it makes no sense to store them on disk. If the image name had the
dimentions I could check if that particular image was already generated, but
it looks like too much trouble.

I think I will use AJAX to request the generation of the image. Besides, all
this trouble is _only_ for the main page news image and a few other places.
The site itself is actually quite simple.

When I finish this site I will make the code available so you can shoot at
it :-D

Using one of the Cache modules on the CPAN you can constrain the
> cache to say 200MB and still get decent performance.
>
> I hope this helps
>
>
> There are two more categories of plugins - ones that act on the web
> specific data structures (e.g. C::P::Browser, C::P::Session), and


[...]

controller just using caching services, and the configuration
> providing all the know-how for choosing the right cache, etc.
>
> It doesn't sound like any of these scenarios coincide with yours.


Thanks!



--
>   Yuval Kogman <nothingmuch at woobling.org>
> http://nothingmuch.woobling.org  0xEBD27418
>
>
>
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