I feel like this has to be buried somewhere in the documentation, but I can\'t find it.
How do you close or end or kill (whatever) a session in ExpressJS?
The question didn't clarify what type of session store was being used. Both answers seem to be correct.
For cookie based sessions:
From http://expressjs.com/api.html#cookieSession
req.session = null // Deletes the cookie.
For Redis, etc based sessions:
req.session.destroy // Deletes the session in the database.