[Ur] Server threads?

[Chris Double]

If a Client is in a table row and the client disconnects that row is
removed automatically. Is it possible to also run a function at this
time? Say I do some work when the client connects followed by adding
them to the table, they disconnect, I want to cleanup the work I did
previously before the row is removed. Is this possible?

If not, is it possible to run some scheduled task or thread that
periodically runs a function on the server to do this cleanup?

Chris.
-- 
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