Databricks

Identify the workload pattern where a traditional ANN-indexed vector database is the wrong tool, and a log-structured or batch-rebuild approach fits better.

Which of these 2026 vector databases are credible at billion-vector scale? Select all that apply.

Sharding a vector index that does not fit on one node, how is it typically done, and what's the query-time cost?

Compare namespace-per-tenant against single-shared-index-with-tenant-filter for a B2B RAG product serving 5000 customers.

Modern vector databases combine sparse (BM25) and dense vectors at the storage layer via two distinct patterns. Identify them.

Pre-filter versus post-filter strategies for metadata-constrained ANN search — what breaks at each extreme?

Aggressive metadata filtering can silently destroy recall on an HNSW index even when matches exist. Why?

Doubling the embedding dimension from 768 to 1536 — what changes in storage, query latency, and PQ trainability?

Select all dimensions that meaningfully drive cost on a managed vector database bill in 2026.

A team's Pinecone bill 5x'd month over month with no traffic change. Order the most likely causes to investigate, from most likely to least likely.