Example background:
1,000 users have registered for ‘Speed City Fire Command Transporter’ and only 10 pieces are back in stock.
Our Solution
We would base on the date and time that the customers submit the notification request to the product (e.g. ‘Speed City Fire Command Transporter’) and put them all (let say 1000 people) in a queue.
If there’s 10 pcs back in stock, then in the first hour we will notify the first 10 customers in the queue.
After an hour if 10 pcs are still there, then in the second hour we will notify the next 10 customers in the queue. If there’s only 5 pcs left after the first hour, then in the second hour we will notify the next 5 customers in the queue, so on and so forth.
Continue doing this until all the stocks are sold or all customers in the queue are notified (depends on which one comes earlier).