def _get_bin(self, key):
        '''
        Returns a binned dictionary based on redis zscore
        @return: The sorted dict
        '''
        sortedDict = {}
        for item in self.redis_conn.zscan_iter(key):
            my_item = ujson.loads(item[0])
            my_score = -item[1]
            if my_score not in sortedDict:
                sortedDict[my_score] = []
            sortedDict[my_score].append(my_item)
        return sortedDict