XitDB
an immutable single-file database
Details
- External ID
- 47805446
- Source
- HN
- Company
- —
- Product
- XitDB
- Website domain
- github.com
- Launched
- April 17, 2026
- Cohort
- —
- Upvotes
- 8
- Upvotes percentile
- 0.4813624678663239
- Tags
- —
- Fetched at
- Sept. 7, 2026, 9:26 p.m.
- Updated at
- Sept. 7, 2026, 9:26 p.m.
Description
I couldn't find a database that was immutable (like Datomic) and embedded (like SQLite), so I made one. The reference impl is in Zig and there are now ports for Java, Clojure, TypeScript, and Go.
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
- immutable single-file database
- Manually corrected
- False
Could you build this?
No Writing a custom embedded immutable database engine in Zig with multi-language ports requires specialized knowledge of database storage engines, B-trees, and concurrency.
What it would actually take: The engine requires implementing copy-on-write immutable data structures (like append-only B-trees or fractal trees), custom binary file serialization, memory mapping (mmap), and ACID crash recovery in Zig. The hardest part is ensuring zero corruption on crashes, memory safety, and cross-platform binary compatibility across language bindings. This requires extensive experience in database internals, disk I/O semantics, and systems programming.
Discussion
No comments on this launch.
Competitors
Other products that read as similar to this one — 68 launches clear the similarity bar, closest 8 shown.
Attention rank: #39 of 69 (itself plus its competitors, highest first — normalized so YC and Product Hunt are compared fairly).
Launched 170 days after the earliest competitor.
- LatticeDB · hn · 2026-08-25 · 190 upvotes · similarity 0.52
- GEDB · hn · 2026-02-16 · 9 upvotes · similarity 0.51
- ChikkaDB · hn · 2025-11-29 · 5 upvotes · similarity 0.47
- Xsql · hn · 2025-12-16 · 11 upvotes · similarity 0.41
- Zvec · hn · 2026-01-29 · 7 upvotes · similarity 0.40
- VectorDBZ, a desktop GUI for vector databases · hn · 2026-01-01 · 13 upvotes · similarity 0.40
- VillageSQL = MySQL and Extensions · hn · 2026-02-05 · 27 upvotes · similarity 0.39
- NodeDB · hn · 2026-05-11 · 5 upvotes · similarity 0.39
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.