How to write a Worker that will periodically perform a task?

Question

Amazon Web Services

The essence of the task, there are 10 users, you need to send them a Push Notification one by one, in the application the user sees a question that can be answered Yes or No or does not answer at all.
Regardless of the answer, after the time set for the worker, he will check the database if there is an answer?
If the question has an answer, the worker exits, if not, it sends a Push Notification to the next one in the list.
What is the best way to implement the work of such a worker?
The use of setTimeout suggests itself, but I'm not sure about the reliability of such a solution.

Answer 1

https://github.com/node-schedule/node-schedule