There is a slot locking mecanism in this video
around 25 minutes… If this is what You are looking for.
Basically You want to lock a slot for a booking application for 5 minutes? Probably because each booking reduces the capacity of your stock, and You don’t want to sell more than what You can provide.
He wants to lock a timeslot for a user to order something, so no other user could bypass this by typing faster. There is not even the need to store lock_until, just spawn a process with locked_for, and a timeout. As soon as the process expire, so does the lock.
Each resource has a capacity, when You want to book, You request an access, that will decrement capacity, in case You don’t fill the booking in 5 minutes, the token expires without being used, and capacity is increased.
Is that what You want to do?
