JKjkot·Aug 24, 2015
Clickable link: https://github.com/jankotek/mapdb-hz-offheap
In Show HN: Off-heap storage for Hazelcastjankotek
mapdb-hz-offheap
Java2014–2015
jankotek / mapdb-hz-offheap
mapdb-hz-offheap
Provides off-heap storage for in-memory datagrid build in Turkey
2Distinct people
3Mentions
0Explicit recommenders
55GitHub stars
What to know before exploring
What it is
Provides off-heap storage for in-memory datagrid build in Turkey
GitHub
Where it is used
No documented product use has been verified yet.
What people are saying
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Also in these discussions
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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 month3 dated mentions
Observed mentions: 2014-05-22 12:58:10 UTC to 2015-08-24 09:58:22 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 |
|---|---|---|---|---|---|
| May 2014 | 2014-05-01 00:00:00 UTC | 2014-06-01 00:00:00 UTC | 1 | 1 | 0 |
| Jun 2014 | 2014-06-01 00:00:00 UTC | 2014-07-01 00:00:00 UTC | 0 | 0 | 0 |
| Jul 2014 | 2014-07-01 00:00:00 UTC | 2014-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2014 | 2014-08-01 00:00:00 UTC | 2014-09-01 00:00:00 UTC | 0 | 0 | 0 |
| Sep 2014 | 2014-09-01 00:00:00 UTC | 2014-10-01 00:00:00 UTC | 0 | 0 | 0 |
| Oct 2014 | 2014-10-01 00:00:00 UTC | 2014-11-01 00:00:00 UTC | 0 | 0 | 0 |
| Nov 2014 | 2014-11-01 00:00:00 UTC | 2014-12-01 00:00:00 UTC | 0 | 0 | 0 |
| Dec 2014 | 2014-12-01 00:00:00 UTC | 2015-01-01 00:00:00 UTC | 0 | 0 | 0 |
| Jan 2015 | 2015-01-01 00:00:00 UTC | 2015-02-01 00:00:00 UTC | 0 | 0 | 0 |
| Feb 2015 | 2015-02-01 00:00:00 UTC | 2015-03-01 00:00:00 UTC | 0 | 0 | 0 |
| Mar 2015 | 2015-03-01 00:00:00 UTC | 2015-04-01 00:00:00 UTC | 0 | 0 | 0 |
| Apr 2015 | 2015-04-01 00:00:00 UTC | 2015-05-01 00:00:00 UTC | 0 | 0 | 0 |
| May 2015 | 2015-05-01 00:00:00 UTC | 2015-06-01 00:00:00 UTC | 0 | 0 | 0 |
| Jun 2015 | 2015-06-01 00:00:00 UTC | 2015-07-01 00:00:00 UTC | 0 | 0 | 0 |
| Jul 2015 | 2015-07-01 00:00:00 UTC | 2015-08-01 00:00:00 UTC | 0 | 0 | 0 |
| Aug 2015 | 2015-08-01 00:00:00 UTC | 2015-09-01 00:00:00 UTC | 2 | 1 | 1 |
What Hacker News says
3 sourcesShow HN: Off-heap storage for Hazelcast
Hi,
I work on an embedded database engine for Java. One of the things it provides are Java collections outside heap, not limited by Garbage Collector.
One of my projects is using Hazelcast. But Hazelcast is limited by GC to about 4GB of data per node. So I patched Hazelcast to use off-heap Map from my database engine. Now it handles 25GB per node without a hiccup.
It is about 3x slower, but fits 2x more data into same memory. Also it does not have GC overhead, so from about 8GB it becomes faster.
It is completely free under Apache 2 license, it is sponsored by my consulting. I would like to know your ideas what to do with this project in future. And perhaps there is similar project which could use similar optimization.
https://github.com/jankotek/mapdb-hz-offheap
3 points · Open discussionShow HN: off-heap extension for Hazelcast, free under ASF2
3 points · Open discussion