If the guy needs access counters without an ever-growing disk file, he dismissed MongoDB too fast. The ability to repeatedly alter fixed size data without growi

If the guy needs access counters without an ever-growing disk file, he dismissed MongoDB too fast. The ability to repeatedly alter fixed size data without growing the storage is something MongoDB has, and no other database engine that I know of. (Their design has its own serious disadvantages, but still, if that's the behaviour you need...)