The system that gathers data for California birth certificates and related [pre]natal health stats reporting is written in MUMPS/M/Cache.
I’ve not worked with the code for that, though - we are in the process of replacing it. The fellow that originally created the system decades ago has been in “semi retirement” for quite a while, and it’s hard to find people that want to work on the platform. So, we are doing a replacement in (mostly) Java, of course. And I don’t even especially like Java, but it pays the bills in the Sacramento area.
I suspect the bigger scaling issues with the codebase are “people-ware”, and thus the push (in most shops and projects) to go least common denominator on programming platform choice, sadly.
I’ve not worked with the code for that, though - we are in the process of replacing it. The fellow that originally created the system decades ago has been in “semi retirement” for quite a while, and it’s hard to find people that want to work on the platform. So, we are doing a replacement in (mostly) Java, of course. And I don’t even especially like Java, but it pays the bills in the Sacramento area.
I suspect the bigger scaling issues with the codebase are “people-ware”, and thus the push (in most shops and projects) to go least common denominator on programming platform choice, sadly.