[aschen]

> From the developer standpoint, it's very nice to use, I just throw documents at it and it saves them. If I want an extra field, I just add it. If I want an index on something, also just add it. No big complicated schema migrations.

This sentence summarize all the issues developers working with Mongo will have: multiple version of documents living in the same DB and unpredictable structure

Best thing MongoDB have it's definitely their marketing (making everyone think it's amazing to invest hundreds of millions to deliver an "OK" tier database) and their customer support

[cyberpunk]

Eh, not really. I've done both at considerable scale, and I don't hit these problems. Perhaps you need better developers? For sure, having your database enforce guardrails on what $thing should look like means your code can be lower quality, but you should pick the right tool for the job. For scenarios where I have one 'thing' that's not very relational, it works well. If your application dies because your $thing expects some field which isn't there, that's a you problem not a storage problem.

[BoorishBears]

Requiring weekly handholding sessions for 175k RPS really takes the wind out of this tack doesn't it?