KeyValueFactoryInterface

class \Drupal\Core\KeyValueStore\KeyValueDatabaseFactory implements \Drupal\Core\KeyValueStore\KeyValueFactoryInterface
class \Drupal\Core\KeyValueStore\KeyValueExpirableFactory extends \Drupal\Core\KeyValueStore\KeyValueFactory implements \Drupal\Core\KeyValueStore\KeyValueExpirableFactoryInterface
class \Drupal\Core\KeyValueStore\KeyValueFactory implements \Drupal\Core\KeyValueStore\KeyValueFactoryInterface
class \Drupal\Core\KeyValueStore\KeyValueMemoryFactory implements \Drupal\Core\KeyValueStore\KeyValueFactoryInterface

Buggy or inaccurate documentation? Please file an issue. Need support? Need help programming? Connect with the Drupal community.