Implements Drupal\Core\Cache\CacheBackendInterface::deleteMultiple().
Overrides CacheBackendInterface::deleteMultiple
public function deleteMultiple(array $cids) {
// Delete in chunks when a large array is passed.
do {
Database::getConnection()
->delete($this->bin)
->condition('cid', array_splice($cids, 0, 1000), 'IN')
->execute();
} while (count($cids));
}