Expanded class hierarchy of PersistentDatabaseLockBackend in Drupal 8
- class \Drupal\Core\Lock\LockBackendAbstract implements LockBackendInterface
- class \Drupal\Core\Lock\DatabaseLockBackend
- class \Drupal\Core\Lock\PersistentDatabaseLockBackend
- class \Drupal\sqlsrv\Lock\DatabaseLockBackend
- class \Drupal\memcache\Lock\MemcacheLockBackend
- class \Drupal\mongodb\MongodbLock
- class \Drupal\redis\Lock\PhpRedis uses RedisPrefixTrait
- class \Drupal\redis\Lock\Predis uses RedisPrefixTrait
- class \Drupal\Core\Lock\DatabaseLockBackend