who said they were an alternative to relational databases? The problem with the post was not that the 4 mentioned were bad, only that they were the "only four worth using" which is an eye-rollingly ridiculous statement. Anybody who asserts that relational databases are the only serious databases is plain wrong, or has an ulterior motive. And this is not for "web scale bullshit" by the way. It is about large amounts of financial timeseries ingest for machine learning optimizations that I can promise you, has nothing to do with the web.