HackerReposA FIELD GUIDE TO OPEN SOURCE
ProSponsor the shelf♧ 0
← Back to top all-time
replikativ
stratum
Clojure2026–2026
replikativ / stratum

stratum

Versioned, fast and scalable columnar database.

Data & DatabasesLanguages & Compilers
Explore on GitHubRead Hacker News discussions
2Distinct people
2Mentions
0Explicit recommenders
69GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Versioned, fast and scalable columnar database.

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, 3:56:07 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 6-hour interval2 dated mentions

Observed mentions: 2026-03-06 22:39:55 UTC to 2026-03-12 21:40:18 UTC.

012026-03-06 18:00:00 UTC to 2026-03-07 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsMar 6, 18:002026-03-07 00:00:00 UTC to 2026-03-07 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-07 06:00:00 UTC to 2026-03-07 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-07 12:00:00 UTC to 2026-03-07 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-07 18:00:00 UTC to 2026-03-08 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-08 00:00:00 UTC to 2026-03-08 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-08 06:00:00 UTC to 2026-03-08 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-08 12:00:00 UTC to 2026-03-08 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-08 18:00:00 UTC to 2026-03-09 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-09 00:00:00 UTC to 2026-03-09 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-09 06:00:00 UTC to 2026-03-09 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-09 12:00:00 UTC to 2026-03-09 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-09 18:00:00 UTC to 2026-03-10 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsMar 9, 18:002026-03-10 00:00:00 UTC to 2026-03-10 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-10 06:00:00 UTC to 2026-03-10 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-10 12:00:00 UTC to 2026-03-10 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-10 18:00:00 UTC to 2026-03-11 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-11 00:00:00 UTC to 2026-03-11 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-11 06:00:00 UTC to 2026-03-11 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-11 12:00:00 UTC to 2026-03-11 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-11 18:00:00 UTC to 2026-03-12 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-12 00:00:00 UTC to 2026-03-12 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-12 06:00:00 UTC to 2026-03-12 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-12 12:00:00 UTC to 2026-03-12 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2026-03-12 18:00:00 UTC to 2026-03-13 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsMar 12, 18:00

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges
UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
PeriodStart (UTC)End (exclusive, UTC)MentionsSubmissionsComments
Mar 6, 18:002026-03-06 18:00:00 UTC2026-03-07 00:00:00 UTC101
Mar 7, 00:002026-03-07 00:00:00 UTC2026-03-07 06:00:00 UTC000
Mar 7, 06:002026-03-07 06:00:00 UTC2026-03-07 12:00:00 UTC000
Mar 7, 12:002026-03-07 12:00:00 UTC2026-03-07 18:00:00 UTC000
Mar 7, 18:002026-03-07 18:00:00 UTC2026-03-08 00:00:00 UTC000
Mar 8, 00:002026-03-08 00:00:00 UTC2026-03-08 06:00:00 UTC000
Mar 8, 06:002026-03-08 06:00:00 UTC2026-03-08 12:00:00 UTC000
Mar 8, 12:002026-03-08 12:00:00 UTC2026-03-08 18:00:00 UTC000
Mar 8, 18:002026-03-08 18:00:00 UTC2026-03-09 00:00:00 UTC000
Mar 9, 00:002026-03-09 00:00:00 UTC2026-03-09 06:00:00 UTC000
Mar 9, 06:002026-03-09 06:00:00 UTC2026-03-09 12:00:00 UTC000
Mar 9, 12:002026-03-09 12:00:00 UTC2026-03-09 18:00:00 UTC000
Mar 9, 18:002026-03-09 18:00:00 UTC2026-03-10 00:00:00 UTC000
Mar 10, 00:002026-03-10 00:00:00 UTC2026-03-10 06:00:00 UTC000
Mar 10, 06:002026-03-10 06:00:00 UTC2026-03-10 12:00:00 UTC000
Mar 10, 12:002026-03-10 12:00:00 UTC2026-03-10 18:00:00 UTC000
Mar 10, 18:002026-03-10 18:00:00 UTC2026-03-11 00:00:00 UTC000
Mar 11, 00:002026-03-11 00:00:00 UTC2026-03-11 06:00:00 UTC000
Mar 11, 06:002026-03-11 06:00:00 UTC2026-03-11 12:00:00 UTC000
Mar 11, 12:002026-03-11 12:00:00 UTC2026-03-11 18:00:00 UTC000
Mar 11, 18:002026-03-11 18:00:00 UTC2026-03-12 00:00:00 UTC000
Mar 12, 00:002026-03-12 00:00:00 UTC2026-03-12 06:00:00 UTC000
Mar 12, 06:002026-03-12 06:00:00 UTC2026-03-12 12:00:00 UTC000
Mar 12, 12:002026-03-12 12:00:00 UTC2026-03-12 18:00:00 UTC000
Mar 12, 18:002026-03-12 18:00:00 UTC2026-03-13 00:00:00 UTC101

What Hacker News says

2 sources
whilo·Mar 6, 2026
Hi HN - I’m the author of Stratum. Stratum is a columnar SQL engine built on the JVM exploring two ideas: • SIMD execution using the Java Vector API • copy-on-write branching for tables It speaks the PostgreSQL wire protocol, so tools like psql, JDBC, and DBeaver work out of the box. The engine is pure JVM (no JNI). In benchmarks on 10M rows it performs competitively with DuckDB on many analytical queries. GitHub repo: https://github.com/replikativ/stratum Benchmarks and methodology are described in the docs. Happy to answer questions - feedback very welcome.
In Show HN: Stratum - a pure JVM columnar SQL engine using the Java Vector API

MAKE YOURSELF AT HOME

A few shortcuts

/
Search the collection
?
Open this guide
Esc
Close dialogs and navigation

Your saved repositories and interests stay in this browser.