Datalevin
a simple, fast, and versatile Datalog database
Get picks like this daily. Today's launch numbers, the top launches, AI and tech news, and a daily opportunity pick, straight to your inbox.
Want to reach these readers? Sponsor an issue.
After 6 years of open source development, Datalevin has now reached 1.0. The goal of the project is to have better ergonomics than a SQL database for OLTP workloads. We have made Datalog practical by being competitive in relational and graph query performance, and by integrating full-text, vector search and document indexing into the same fact-based data model. I am the maintainer and happy to answer any questions.
HN · launched Jul 21, 2026 · 8 upvotes (top 54%) · 0 views
Niche: database management systems and engines · 162 launches, 5 in the last 7 days ▼ -17% · Explore this niche →
Category and tags
- Horizontal
- Data infrastructure
- Developer
- Not AI
- Hobby / open-source project
Visit website ↗ Source listing ↗
More like this: all 162 launches in database management systems and engines →
Could you build this?
No Building an ACID-compliant Datalog database engine with transactional storage, custom query planners, graph traversal, and native vector/full-text indexing requires years of deep database systems programming.
What it would actually take: Requires building or integrating a high-performance transactional key-value store (like LMDB) in Clojure/C/Java, implementing relational algebra and Datalog unification engines (e.g., semi-naïve evaluation, magic sets), and building inverted indexes for BM25 search alongside HNSW graph indexes for vector search. It demands specialized knowledge in concurrency control, write-ahead logging, memory mapping, and query optimization.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one : 129 launches clear the similarity bar, closest 8 shown.
Attention rank: #69 of 130 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 265 days after the earliest competitor.
- HelixDB · hn · 2026-06-10 · 159 upvotes · similarity 0.47
- AetheriusDB · ph · 2026-10-29 · 1 upvotes · similarity 0.42
- TuringDB · hn · 2026-01-28 · 7 upvotes · similarity 0.41
- Optimize Databricks SQL · hn · 2025-10-29 · 6 upvotes · similarity 0.40
- Datastory, Data storytelling with AI and an open knowledge graph · hn · 2026-09-30 · 6 upvotes · similarity 0.39
- IndexFlow · hn · 2026-08-28 · 22 upvotes · similarity 0.39
- Data-World · github · 2026-10-13 · 19 upvotes · similarity 0.38
- AnamDB · hn · 2026-05-08 · 11 upvotes · similarity 0.38
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.