🚀 go-pugleaf

>I have a question here, if two people with the same account (let's say a
>husband and a wife) and they submit their request at the same time i.e
>for $100 and unfortunately that's what they have left in their account
>($100), what controls are in place to ensure that the account is not
>overdrawn? How does the application ensure that only one request is
>granted? Anyone knows about this?

Every (err, all 3) banking system I've worked on would serialise
access to the account.  The first one in the queue, whether by a
millisecond or less, would get the loot.  The other would bounce.
problem seems no different (simpler in fact) to numerous like problems
- airline reservations; operating system resource allocation, etc etc
etc
Cheers, Alan Vidler