1 from django.conf import settings

     2 from django.contrib.sessions.backends.base import SessionBase

     3 from django.core.cache import cache

     4 

     5 class SessionStore(SessionBase):

     6     """

     7     A cache-based session store. 

     8     """

     9     def __init__(self, session_key=None):

    10         self._cache = cache

    11         super(SessionStore, self).__init__(session_key)

    12         

    13     def load(self):

    14         session_data = self._cache.get(self.session_key)

    15         return session_data or {}

    16 

    17     def save(self):

    18         self._cache.set(self.session_key, self._session, settings.SESSION_COOKIE_AGE)

    19 

    20     def exists(self, session_key):

    21         if self._cache.get(session_key):

    22             return True

    23         return False

    24         

    25     def delete(self, session_key):

    26         self._cache.delete(session_key)