Re: In Cache settings, what is "probability"?

I found this line in cake/libs/cache.php:

if (time() % $_this->_Engine[$name]->settings['probability'] === 0) {
$_this->_Engine[$name]->gc();
}

It means that the cache will be cleared if timestamp modulo
probability hits 0. So as higher the probability as longer the cache
file lives. You could use it if you say that after probable 100 hits
the cache expires.

On 27 Aug., 17:06, "j.blotus" <j.blo...@gmail.com> wrote:
> Cache::config('long', array(
>     'engine' => 'File',
>     'duration'=> '+1 week',
>     'probability'=> 100,
>     'path' => CACHE . 'long' . DS,
> ));
>
> what does "propability" do? I can not find an explanation for it

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