What do pro developers use as their noSQL db?

Question

I'm curious. I read this article that made it to the top of HN: https://danluu.com/p95-skill/The tl;dr; is that you should ask for feedback to improve. I'm no pro but I would like to learn from the pros and figured this is a good question and a good place to ask.Happy to learn from you all :)

GoldenMonkey · Accepted Answer

DynamoDB on amazon web services. I particularly like the fact, that one does not have to change or add columns... our data is stored in json. The json layout can change over time... without needing to update the table definitions.
The initial primary key setup is important. As this sets up the search parameters.
https://aws.amazon.com/dynamodb/

verdverm · Answer

postgres jsonb if I had to, but rarely do I feel the need for noSQL