djangoMongoCache.py 文件源码

def _base_set(self, mode, key, value, timeout=None):

        timeout = timeout or self.default_timeout

        # Only UTC here for Mongo auto-purge

        now = datetime.utcnow()
        expires = now + timedelta(seconds=timeout)

        #

        pickled = pickle.dumps(value, pickle.HIGHEST_PROTOCOL)
        encoded = base64.encodebytes(pickled).strip()

        if mode == 'set':
            # Set sets new data. And there is no matter, that key exists
            self._coll.update({'key':key} ,{'key':key, 'data': encoded, 'expires': expires}, upsert = True)

        elif mode == 'add':
            if self._coll.find_one({'key': key}):
                return False
            self._coll.insert({'key': key, 'data': encoded, 'expires': expires})

        return True