import redis


class DbRedis:

    __connection = None

    @staticmethod
    def connect():

        if DbRedis.__connection is None:

            host = 'r-2ze28bdb7389a8a4614.redis.rds.aliyuncs.com'
            # host = 'r-2ze28bdb7389a8a4pd.redis.rds.aliyuncs.com'
            port = 6379
            password = 'Zhuaduoduo2017'

            DbRedis.__connection = redis.StrictRedis(
                host=host,
                port=port,
                password=password,
                decode_responses=True
            )
            print('Redis 连接成功！')

        return DbRedis.__connection