If you need to run queries that aggregate big amounts of data in a reasonable time and cost, you'll need something built for it. For example, with a column oriented file format instead of the row oriented file format found in traditional relational databases

[–] pennomi@lemmy.world 6 points 4 days ago

And the key word “big” here is far bigger than most engineers need to deal with. Hell, most supposed “big data” problems I’ve seen people try to tackle are small enough to fit the whole database into memory.

[–] HK65@sopuli.xyz 1 points 4 days ago

My point is more that 90% of use cases don't need that, and for those that do, you can't just slap eg. Cassandra at it and pretend it's a relational database.