>I would really like to know when to choose which database I have asked this question before - under what situations is Mongo not just equally good as Postgres

>I would really like to know when to choose which database I have asked this question before - under what situations is Mongo not just equally good as Postgres - but actually better? The only really coherent answer was that it was easier to configure replication (presumably because it chooses a lot of defaults for you). I'm not even sure that was a good thing given the number of obscure bugs that can arise from incorrectly configured replication. Postgres even seems to be more performant at NoSQL use cases (using the JSON store) than Mongo, which is frankly embarrassing.