Why did you bundle Redis and not use one of the many key value libraries available for Rust (or even sqlite)?
Aren't vector searches usuaully just like nearest values with some distance calculation? Are they not all implemented the same way?
- https://crates.io/crates/lancedb - https://crates.io/crates/usearch - https://crates.io/crates/simsimd
search and simsimd are fast and lightweight, but I'd advise to use lancedb if you're a bit new to Rust as the other two are a bit trickier to handle due to the C dependency (e.g. usearch needs Vec::with_capacity and will otherwise crash, etc).
And then, you take the result of this query and can combine it with a sqlite `in` query.
Or you use SQLite with a vector search extension: https://crates.io/crates/rig-sqlite
You mentioned "VSS" in another comment, which if that was my sqlite-vss extension, I more-or-less abandoned that extension for sqlite-vec last year. The VSS extension was more unstable and bloated (based on Faiss), but the new VEC extension is much more lightweight and easy to use (custom C vector functions). The new metadata column support is also pretty nice, and can be used for push-down filtering.
That being said, sqlite-vec still doesn't have ANN yet (but can brute-force ~10k's-100k of vectors quick enough), and I've fallen behind on updates and new releases. Hoping to push out a desperately-needed update this week
link: https://alexgarcia.xyz/sqlite-vec/
And there are a few other SQLite-based vector search extensions/tools out there, so the ecosystem is general might be worth another look.