Token expiry

[sheldon-sminq]

What is the default expiry time for a token? Also if a token expires how do we refresh token, without asking the user to re-login.

[streetpoet]

1, the expire time of token should be set by developer when creating the token.
2, you can create 2 token at first time with different expire time, logically mark one as access token, and another as refresh token