[solved] where to store recurrent data ?

[eluser]mariek[/eluser]
[quote author="rogierb" date="1248962621"]Add the image stuff in a helper, then load it once in the administration controller or in the autoload.
[/quote]

I like your solution, but wouldn't it be faster to store it as a constant somewhere ?
(In fact, my question was more about where to store constants)