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Comment by bschmidt107979 | Hacker News Reader

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Because nobody uses mongo for the reasons you listed. They use redis, dynamo, scylla or any number of enriched KV stores.

Mongo has spent its entire existence pretending to be a SQL database by poorly reinventing everything you get for free in postgres or mysql or cockroach.

False. Mongo never pretended to be a SQL database. But some dimwits insisted on using it for transactions, for whatever reason, and so it got transactional support, way later in life, and in non-sharded clusters in the initial release. People that know what they are doing have been using MongoDB for reliable horizontally-scalable document storage basically since 3.4. With proper complex indexing.

Scylla! Yes, it will store and fetch your simple data very quickly with very good operational characteristics. Not so good for complex querying and indexing.

Yeah fair, I was being a bit lazy here when writing my comment. I've used nosql professionally quite a bit, but always set up by others. When working on personal projects I reach for SQL first because I can throw something together and don't need ideal performance. You're absolutely right that they both have their place.

That being said the question was genuine - because I don't keep up with the ecosystem, I don't know it's ever valid practice to have a nosql db exposed to the internet.

What they wrote was pretty benign. They just asked how common it is for Mongo to be exposed. You seem to have taken that as a completely different statement

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