| Handler |
| Proxy |
| SessionStorageFactoryInterface | |
| SessionStorageInterface | StorageInterface. |
| MetadataBag | Metadata container. |
| MockArraySessionStorage | MockArraySessionStorage mocks the session for unit tests. |
| MockFileSessionStorage | MockFileSessionStorage is used to mock sessions for functional testing where you may need to persist session data across separate PHP processes. |
| MockFileSessionStorageFactory | |
| NativeSessionStorage | This provides a base class for session attribute storage. |
| NativeSessionStorageFactory | |
| PhpBridgeSessionStorage | Allows session to be started by PHP and managed by Symfony. |
| PhpBridgeSessionStorageFactory |