This bundle provide a way to define some configuration parameters that are not dependants of the symfony container. As they are independants, they can be changed without interfering with Symfony configuration and without clearing the cache.
This bundle use a parameter container that is persisted in the file
app/config/dynamique_config.yml
$config = $container->get('kalamu_dynamique_config');
echo "The background color is : ".$config->get('background_color', 'red'); // get the value of 'background_color' or 'red' if it's not defined
$config->set('background_color', 'blue'); // change the configuration
$config->has('background_color'); // return TRUE
$config->remove('background_color'); // remove this parameter