How can I find the session Id when using express / connect and a session store?

Question

If a user is already logged in and tries to login again in a new instance I\'d like it to log out the other user instance. I don\'t want the same user to be logged in twice on m

Answer 1

Question: Is it possible to query Redis to obtain the session id based on the username?

No. The session keys in redis are not named after the username.

Here's a thought, though: When an already logged in user tries to login again, can't you see that, in your application, and either destroy the old session immediately, or not allow them to login again?