[mLuby]

You make a good counterpoint: it's awesome that this can be done concisely enough these days to fit in a hobby blog post. That's new and demonstrates the approachability of these tools.

At the same time, OP is right: a business doing this is making poor engineering decisions.

[kjeetgill]

We don't know that yet! The post explains what they did but not the why of the problem. Maybe they have a good reason, maybe they don't.

But no need to jump to conclusions. I've seen plenty of bs fragile ducktape databases. Some of them exist because because someone wanted to hand-roll everything. And some exist because they were afraid to invent anything and ended up hacking together a bunch of garbage MySQL nodes. Because they didn't want "reinvent the wheel".

Specifics matter!