Comment by tacoooooooo
Comment by tacoooooooo 12 hours ago
for sure people are running pgvector in prd! i was more pointing at every tutorial
iterative scans are more of a bandaid for filtering than a solution. you will still run into issues with highly restrictive filters. you still need to understand ef_search and max_search_tuples. strict vs relaxed ordering, etc. it's an improvement for sure, but the planner still doesn't deeply understand the cost model of filtered vector search
there isn't a general solution to the pre- vs post-filter problem—it comes down to having a smart planner that understands your data distribution. question is whether you have the resources to build and tune that yourself or want to offload it to a service that's able to focus on it directly
I feel like this is more of a general critique about technology writing; there are always a lot of “getting started” tutorials for things, but there is a dearth of “how to actually use this thing in anger” documentation.