All classes that implement CacheBackendInterface

class \Drupal\Core\Cache\BackendChain implements CacheBackendInterface
class \Drupal\Core\Cache\DatabaseBackend implements CacheBackendInterface
class \Drupal\Core\Cache\MemoryBackend implements CacheBackendInterface
class \Drupal\Core\Cache\MemoryCounterBackend
class \Drupal\Core\Cache\NullBackend implements CacheBackendInterface