Or perhaps the original programmers skipped the class on concurrency 25 years ago, and nobody has subsequently bothered to pay anyone to update that part of the software.
One time I decided to test whether these grocery story loyalty card XX cents off per gallon transactions were properly isolated, when my wife and I were both filling up vehicles at the same gas station at the same time. We both got the $0.50 discount per gallon with no problem. I'm sure there are lots of creative ways you can exploit the poor design of these things.
Perhaps.
Or perhaps the original programmers skipped the class on concurrency 25 years ago, and nobody has subsequently bothered to pay anyone to update that part of the software.
One time I decided to test whether these grocery story loyalty card XX cents off per gallon transactions were properly isolated, when my wife and I were both filling up vehicles at the same gas station at the same time. We both got the $0.50 discount per gallon with no problem. I'm sure there are lots of creative ways you can exploit the poor design of these things.