TOtosh·Jan 6, 2020Submission
Naga, a Datalog based rules engine in Clojure
2 points · Open discussionthreatgrid
naga
Clojure2016–2020
threatgrid / naga
naga
Datalog based rules engine
3Distinct people
3Mentions
0Explicit recommenders
385GitHub stars
What to know before exploring
What it is
Datalog based rules engine
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
No other repository is repeatedly linked in the same discussions.
This week on Hacker News
Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 5:04:57 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year3 dated mentions
Observed mentions: 2016-12-09 02:33:20 UTC to 2020-01-06 09:48:39 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 2 | 1 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 0 | 0 | 0 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 1 | 1 | 0 |
What Hacker News says
3 sourcesWhere are you seeing that it uses Datomic? The linked page says:
Datalog based rules engine and The language being implemented is called "Pabu" and it strongly resembles Prolog.
There doesn't seem to be much documentation for this, but the examples look like this:
sibling(fred, barney).
parent(fred, mary).
sibling(mary, george).
gender(george, male).
/* Using the OWL namespace to describe the sibling property */
owl:SymmetricProperty(sibling).
See [1]
It's been a while since I did Prolog, but that looks pretty familiar (and like your example)
[1] https://github.com/threatgrid/naga/blob/master/pabu/family-2...
In Naga: Datalog-based rules engine in ClojureNaga: Datalog-based rules engine in Clojure
87 points · Open discussion