for the following two points
1, Wechat will not inform developers of the validity period of session_key. We will renew session_key according to the behavior of users using Mini Program. The more frequently users use Mini Program, the longer the validity of session_key.
2. When implementing a custom login state, developers can consider the session_key validity period as the validity period of their login state.
I save the generated 3rd_session to redis, when the session_key expires and the 3rd_session in the redis expires, how do I set the validity period of the 3rd_session?