[ofiryanai]

Very exciting! I sympathise with the Redis "lego" way. But don't you think that hybrid search ha meaningful use cases? E.g searches that combines BM25 or piplned search in more sophisticated way than simple filter + knn / hnsw then filter? Or maybe its more for a search engine than a cache

[antirez]

I think that hybrid is useful in many contexts, but that providing hybrid as a bundle with other filtering techniques, API-side, is not necessarily the best way. Just a trivial example, you want to filter by documents year for similarity. With Redis vector indexes you didn't even care about hybrid, you create different keys for different years. This is the usual Redis tradeoff, it's very similar to the past but applied to a novel field.

However I don't deny that in the future maybe, if elements of vector sets happen to be JSON documents (maybe just with the attributes you want to filter with, and a document ID), it may be useful to have VSIM options to filter by such scalars.