Datalevin
a simple, fast, and versatile Datalog database
Details
- External ID
- 48997465
- Source
- HN
- Company
- —
- Product
- Datalevin
- Website domain
- github.com
- Launched
- July 21, 2026
- Cohort
- —
- Upvotes
- 8
- Upvotes percentile
- 0.46176821983273597
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
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.
Enrichment
- Theme
- database infrastructure and developer tools
- Vertical
- Horizontal
- Function
- Data infrastructure
- Audience
- Developer
- AI stance
- Not AI
- Project type
- Hobby / open-source project
- Normalized one-liner
- datalog database with query capabilities
- Manually corrected
- False
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
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Attention rank: #33 of 57 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 265 days after the earliest competitor.
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Other launches for this product
- No other launches for this product.
Same idea, different domain
Nobody's really built a data infrastructure tool for Media & entertainment yet.