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CacheBackendInterface

class \Drupal\Core\Cache\ApcuBackend extends \Drupal\Core\Cache\CacheBackendInterface
class \Drupal\Core\Cache\BackendChain extends \Drupal\Core\Cache\CacheBackendInterface, \Drupal\Core\Cache\CacheTagsInvalidatorInterface
class \Drupal\Core\Cache\ChainedFastBackend extends \Drupal\Core\Cache\CacheBackendInterface, \Drupal\Core\Cache\CacheTagsInvalidatorInterface
class \Drupal\Core\Cache\DatabaseBackend extends \Drupal\Core\Cache\CacheBackendInterface
class \Drupal\Core\Cache\MemoryBackend extends \Drupal\Core\Cache\CacheBackendInterface, \Drupal\Core\Cache\CacheTagsInvalidatorInterface
class \Drupal\Core\Cache\MemoryCache\MemoryCache extends \Drupal\Core\Cache\MemoryCache\MemoryCacheInterface implements \Drupal\Core\Cache\MemoryBackend
class \Drupal\Core\Cache\MemoryCounterBackend implements \Drupal\Core\Cache\MemoryBackend
class \Drupal\Core\Cache\NullBackend extends \Drupal\Core\Cache\CacheBackendInterface
class \Drupal\Core\Cache\PhpBackend extends \Drupal\Core\Cache\CacheBackendInterface
class \Drupal\Core\Update\UpdateBackend implements \Drupal\Core\Cache\NullBackend
class \Drupal\Tests\Core\Asset\TestMemoryBackend implements \Drupal\Core\Cache\MemoryBackend

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