N98\Magento\Command\Cache\Dir\FlushCommand::getHelp PHP Méthode

    public function getHelp()
    {
        return <<<HELP
The default cache backend is the files cache in Magento. The default
directory of that default cache backend is the directory "var/cache"
within the Magento web-root directory (should be blocked from external
access).

The cache:dir:flish Magerun command will remove all files within that
directory. This is currently the most purist form to reset default
caching configuration in Magento.

Flushing the cache directory can help to re-initialize the whole Magento
application after it got stuck in cached configuration like a half-done
cache initialization, old config data within the files cache and similar.
HELP;
    }