ParqDB
Vector search in the browser from Parquet over HTTP"
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HN · launched Aug 21, 2026 · 26 upvotes (top 21%) · 0 views
Niche: database management systems and engines · 162 launches, 5 in the last 7 days ▼ -17% · Explore this niche →
Category and tags
- Horizontal
- Search & retrieval
- Developer
- AI feature
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 162 launches in database management systems and engines →
Could you build this?
Partial Querying Apache Parquet files directly over HTTP range requests and running in-browser vector search requires low-level byte parsing and SIMD-optimized vector math in WebAssembly.
What it would actually take: The client uses WebAssembly (compiled from Rust or C++) to issue HTTP range requests fetching Apache Parquet headers and vector chunk payloads, avoiding full file downloads. The core difficulty lies in writing an efficient vector similarity index (e.g., HNSW or IVF) that works within browser memory limits using WebAssembly SIMD without server-side compute. Building this requires deep knowledge of columnar storage formats, binary byte manipulation, and vector indexing algorithms.
Discussion
4 comments analyzed.
Competitors mentioned: SQLite with ranges, DuckDB
Concerns raised: DuckDB's vector indexes not portable/shareable as standalone artifacts, DuckDB vector indexes require database server for querying
Competitors
Other products that read as similar to this one : 418 launches clear the similarity bar, closest 8 shown.
Attention rank: #62 of 419 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 294 days after the earliest competitor.
- Pgsemantic · hn · 2026-03-25 · 18 upvotes · similarity 0.56
- SatoriDB · hn · 2025-12-30 · 5 upvotes · similarity 0.55
- cascade-search · github · 2026-09-17 · 8 upvotes · similarity 0.54
- seriousdb · github · 2026-09-12 · 183 upvotes · similarity 0.49
- digga · hn · 2026-07-02 · 6 upvotes · similarity 0.48
- astral-html · github · 2026-10-04 · 32 upvotes · similarity 0.47
- Liteparser · hn · 2026-03-11 · 5 upvotes · similarity 0.47
- parquet-xray · github · 2026-09-28 · 46 upvotes · similarity 0.45
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