LatticeDB
Data
embedded graph database
SHOW HN2026
How HN took it
5 positive, 10 neutral or asking, 0 mixed, 1 critical, out of 16 comments about the project. Thread score +0.20.
Docs: 2 for, 0 againstIdea: 1 for, 0 againstPerformance: 0 for, 1 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Excellent README and clear 'when to use / not use' section
From 2 comments
Very nice - been looking for something that combined the flexibility of graph DBs like Neo4j with the simplicity and low cognitive overhead of SQLite. PErformance looks great…
anigbrowl on HNJust read through the README on GitHub and this looks impressive! Kudos
ebb_earl_co on HN
Sqlite-like embedded design is appealing
From 2 comments
I'm a big fan of SQLite embedded nature, which allows for chaining multiple SQL calls with near-zero latency. I'm currently building a personal knowledge graph server a mix of…
k9294 on HNThank you for sharing. I think the sqlite-esque local file approach makes sense for a lot of use cases. What are some of the scales of the data you've been able to test this…
vorpalhex on HN
Clean, visually appealing docs site
From 1 comment
I like the aesthetics of this page. Very clean and visually appealing
smiths1999 on HN
Objections
Benchmark numbers differ from the README and comparison site
From 1 comment
I measured this on a M4 mac mini (base model): ``` zig build sqlite-benchmark Medium (100K nodes) +----------------------+-----------+---------+---------+ | Workload | LatticeDB…
adsharma on HN
Built with LLMs; tests may be superficial
From 1 comment
I did some perf benchmarking with 1M nodes but I'm mostly using it at smaller scales for another project exploring agentic memory. Most interesting part is a tough one. From a…
smiths1999 on HN
Lacked cross-process locking; concurrent writers unsafe
From 1 comment
Nice work. How do you handle concurrent writers on a single file? That's where embedded databases usually get tricky, and the graph model makes locking even more interesting.
vladigtr on HN
Requests
Litestream-style backup or hot copy
From 1 comment
Does it have something like litestream to backit up for specific production usecases (i.e. a single webserver is enough and downtime of a few mins is tolerable)?
itissid on HN
RDF and SPARQL support
From 2 comments
I wonder about mapping RDF data (like Wikidata) to this. I guess the RDF predicate becomes the edge in your node-edge style of graph.
tomComb on HNIf you're going to support RDF, please also consider supporting SPARQL for querying the data.
zvr on HN
Hierarchical permission modeling examples
From 1 comment
I'm a big fan of SQLite embedded nature, which allows for chaining multiple SQL calls with near-zero latency. I'm currently building a personal knowledge graph server a mix of…
k9294 on HN
Questions
How does it compare to KuzuDB, LadybugDB, DuckPGQ, SurrealDB?
From 4 comments
Out of curiosity, why did you not fork and build on Kuzu?
nrjames on HNLatticeDB looks good, just curious how useful is duckpgq https://duckdb.org/community_extensions/extensions/duckpgq
srameshc on HNHow does it compare to embedded SurrealDB?
pwmglenn on HNSee also: https://ladybugdb.com/ "DuckDB for graphs"
anentropic on HN
How concurrent writers and multi-process access are handled
From 2 comments
Nice work. How do you handle concurrent writers on a single file? That's where embedded databases usually get tricky, and the graph model makes locking even more interesting.
vladigtr on HNNice! I am a huge fan of using process-embedded DBs. Question though: how are you dealing with multi-process access? or does 1 process lock the db?
soumitsrah on HN
How much of the code was written with Claude
From 1 comment
I see "Claude" listed as a contributor. Could you describe how and how much? I'm keen to see how this looks in practise. As for the tool, it scratches an itch I've been having,…
tescreal on HN
Alternatives named
Kuzu / LadybugDB
From 2 comments
See also: https://ladybugdb.com/ "DuckDB for graphs"
anentropic on HNladybugdb ( https://github.com/LadybugDB/ladybug ) appears to be an open source successor to Kuzu fwiw
ble on HN
DuckPGQ
From 1 comment
LatticeDB looks good, just curious how useful is duckpgq https://duckdb.org/community_extensions/extensions/duckpgq
srameshc on HN
SurrealDB
From 1 comment
How does it compare to embedded SurrealDB?
pwmglenn on HN
ArcadeDB
From 1 comment
Why don't just use ArcadeDB (https://arcadedb.com)? Its Graph OLAP makes graph queries faster than KuzuDB (LadybugDB now).
lvca on HN
Neo4j
From 1 comment
Very nice - been looking for something that combined the flexibility of graph DBs like Neo4j with the simplicity and low cognitive overhead of SQLite. PErformance looks great…
anigbrowl on HN