/**
* Submit handler to demonstrate the various uses of cache_clear_all().
*/
public function cacheClearing($form, &$form_state)
{
switch ($form_state->getValue('cache_clear_type')) {
case 'expire':
// Here we'll remove all cache keys in the 'cache' bin that have
// expired.
$this->cacheBackend->garbageCollection();
drupal_set_message($this->t('\\Drupal::cache()->garbageCollection() was called, removing any expired cache items.'));
break;
case 'remove_all':
// This removes all keys in a bin using a super-wildcard. This
// has nothing to do with expiration. It's just brute-force removal.
$this->cacheBackend->deleteAll();
drupal_set_message($this->t('ALL entries in the "cache" bin were removed with \\Drupal::cache()->deleteAll().'));
break;
case 'remove_tag':
// This removes cache entries with the tag "cache_example" set to 1 in
// the "cache".
$tags = array('cache_example:1');
Cache::invalidateTags($tags);
drupal_set_message($this->t('Cache entries with the tag "cache_example" set to 1 in the "cache" bin were invalidated with \\Drupal\\Core\\Cache\\Cache::invalidateTags($tags).'));
break;
}
}
/**
* {@inheritdoc}
*/
public function garbageCollection()
{
$this->consistentBackend->garbageCollection();
$this->fastBackend->garbageCollection();
}
/**
* {@inheritdoc}
*/
public function garbageCollection()
{
return $this->decorated->garbageCollection();
}
/**
* {@inheritdoc}
*/
public function garbageCollection()
{
return $this->cacheBackend->garbageCollection();
}
