Delete session from database after it expired?

Question

This might be a silly question but i was wondering if it would be a good idea to delete all expired \"sessions\" from my database, every 15 minutes?

Or just leave it

Answer 1

If your table looks like that

SessionId datatype,
SessionLastTouch datetime

then when registering the new session do some cleanup after writing(session issue or touch) to the table, like this:

delete from YourSessionsRegister WHERE SessionLastTouch < DATEADD(min, -15, GETDATE())

BUT

May be better way is to cleanup the session register based on some schedule - to reduce DB load in peak hours - simply create the job, which cleans up the register every night or smth. like this