Get the value for the key. It is automatically deserialized from JSON
        and returns an empty dictionary by default.

async def _get(self, key: Text) -> Dict[Text, Any]:
        """
        Get the value for the key. It is automatically deserialized from JSON
        and returns an empty dictionary by default.
        """

        try:
            with await self.pool as r:
                return ujson.loads(await r.get(self.register_key(key)))
        except (ValueError, TypeError):
            return {}