Multiple login restrictions

[wu-clan]

For multi-login restrictions, see:

• https://github.com/flipped-aurora/gin-vue-admin/blob/b1510b55e80708b2bb3d08c1a1ade6f845129f18/server/middleware/jwt.go#L65
  https://github.com/flipped-aurora/gin-vue-admin/blob/b1510b55e80708b2bb3d08c1a1ade6f845129f18/server/api/v1/system/sys_user.go#L93

[wu-clan]

Hi, @downdawn

What do you have in mind?

[downdawn]

Adding to the blacklist or directly clearing each has its own advantages, and we are now directly clearing.

His multi-sign-on here is the same as the single-sign-on I understand. .

[wu-clan]

The current approach seems to clean the data better, Thank you for your efforts.