Re:You Don't Need a Vector Database
by alansaber on Sunday March 08, 2026 @10:00AM
(#47297381)
That RAG is marketing and doesn't significantly affect performance is incorrect. As to whether retrieval really benefits from vector DBs is another question.
[ Parent
| on HN ]
True. RAG is worse in almost all real-world use cases. If you have less than 10,000 documents its worse and if you have too many documents its also worse.
this is way too broad, RAG works fine in the 10k-1M doc range if your chunking and retrieval pipeline are tuned properly. the failure mode is usually bad embeddings or naive chunking, not RAG itself.