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This is a rehash (pardon me) of this post from 2021: https://www.search.io/blog/vectors-versus-hashes

The demand for vector embedding models (like those released by OpenAI, Cohere, HuggingFace, etc) and vector databases (like https://pinecone.io -- disclosure: I work there) has only grown since then. The market has decided that vectors are not, in fact, over.

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PineCone seems interesting. Is the storage backend open source? I've been working on a persistent hashmap database that's somewhat similar (albeit not done) that should have less RAM requirements than bitcask (ie. larger than RAM keysets)

Although we may open-source parts in the future, currently no part of Pinecone is open-sourced. Instead, there are several proprietary index types available, packaged along with hardware/compute resources into what we call “pods.”

Have a look at Milvus (BSD license) and Weviate (Apache 2)

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