Infrastructure●●Solid
DeraineDB – A 33MB Vector DB in Zig/Go with Sub-Millisecond HNSW
Sub-millisecond HNSW in 33MB, but Milvus and Weaviate already own this space.
WizardryBig Brain
RikardoB
413mo ago
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an immutable database for zig
98 starsZig
XitDB – an immutable single-file database
by xeubie·Apr 17, 2026·8 points·0 comments
AI Analysis
●●●BangerBig BrainZero to One
Datomic-style immutability in a SQLite-sized embedded library — genuinely novel combination.
Strengths
- •Immutable transactions enable time-travel queries without WAL or snapshot complexity.
- •Zero dependencies beyond Zig stdlib means trivial embedding in any project.
Weaknesses
- •No query engine means you build your own access patterns — power and complexity.
- •Young project with 66 stars — production battle-testing is still ahead.
Category
Target Audience
Developers needing time-travel queries or audit trails in embedded apps
Similar To
Datomic · SQLite · XTDB
Post 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.
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