Hi Maryna, I posted the question to know what is the best/suggested way to implement it by using the actual appery.io features.

Maybe somebody in the community or the appery.io team have already implemented it (or a similar scenario) in a good way.

Any suggestion?

I have a db table with a list of codes. When a user sign up I need to assign him a unique code from the list.

It has to work also when some users sign up at the same time.
Thanks