Avoid order below 0 quantity available (on order made at same time)

[n-developer]

Hi,
during rush order sessions (with a lot of users doing their checkout simultaneously) we got some orders of non in stock products. The store has many products at quantity 1 so it seems if two customers buy the same products at the same time, the store sells it, generating a -1 quantity.
That's a problem because some of the users can't get the product and a refound is needed.

There's a way to manage that situation better? If the store has the order confirm before checkout it can prevent this situation? Or the problem still the same?