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mperham
ratomic
Ruby2025–2025
mperham / ratomic

ratomic

Ractor-safe mutable data structures for Ruby

2Distinct people
2Mentions
0Explicit recommenders
99GitHub stars
REPOSITORY AT A GLANCE

What to know before exploring

What it is

Ractor-safe mutable data structures for Ruby

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 3-hour interval2 dated mentions

Observed mentions: 2025-03-23 06:54:03 UTC to 2025-03-25 22:01:52 UTC.

012025-03-23 06:00:00 UTC to 2025-03-23 09:00:00 UTC (exclusive): 1 mentions; 1 submissions, 0 commentsMar 23, 06:002025-03-23 09:00:00 UTC to 2025-03-23 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-23 12:00:00 UTC to 2025-03-23 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-23 15:00:00 UTC to 2025-03-23 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-23 18:00:00 UTC to 2025-03-23 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-23 21:00:00 UTC to 2025-03-24 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 00:00:00 UTC to 2025-03-24 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 03:00:00 UTC to 2025-03-24 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 06:00:00 UTC to 2025-03-24 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 09:00:00 UTC to 2025-03-24 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 12:00:00 UTC to 2025-03-24 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 commentsMar 24, 12:002025-03-24 15:00:00 UTC to 2025-03-24 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 18:00:00 UTC to 2025-03-24 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-24 21:00:00 UTC to 2025-03-25 00:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 00:00:00 UTC to 2025-03-25 03:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 03:00:00 UTC to 2025-03-25 06:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 06:00:00 UTC to 2025-03-25 09:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 09:00:00 UTC to 2025-03-25 12:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 12:00:00 UTC to 2025-03-25 15:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 15:00:00 UTC to 2025-03-25 18:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 18:00:00 UTC to 2025-03-25 21:00:00 UTC (exclusive): 0 mentions; 0 submissions, 0 comments2025-03-25 21:00:00 UTC to 2025-03-26 00:00:00 UTC (exclusive): 1 mentions; 0 submissions, 1 commentsMar 25, 21:00

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 23, 06:002025-03-23 06:00:00 UTC2025-03-23 09:00:00 UTC110
Mar 23, 09:002025-03-23 09:00:00 UTC2025-03-23 12:00:00 UTC000
Mar 23, 12:002025-03-23 12:00:00 UTC2025-03-23 15:00:00 UTC000
Mar 23, 15:002025-03-23 15:00:00 UTC2025-03-23 18:00:00 UTC000
Mar 23, 18:002025-03-23 18:00:00 UTC2025-03-23 21:00:00 UTC000
Mar 23, 21:002025-03-23 21:00:00 UTC2025-03-24 00:00:00 UTC000
Mar 24, 00:002025-03-24 00:00:00 UTC2025-03-24 03:00:00 UTC000
Mar 24, 03:002025-03-24 03:00:00 UTC2025-03-24 06:00:00 UTC000
Mar 24, 06:002025-03-24 06:00:00 UTC2025-03-24 09:00:00 UTC000
Mar 24, 09:002025-03-24 09:00:00 UTC2025-03-24 12:00:00 UTC000
Mar 24, 12:002025-03-24 12:00:00 UTC2025-03-24 15:00:00 UTC000
Mar 24, 15:002025-03-24 15:00:00 UTC2025-03-24 18:00:00 UTC000
Mar 24, 18:002025-03-24 18:00:00 UTC2025-03-24 21:00:00 UTC000
Mar 24, 21:002025-03-24 21:00:00 UTC2025-03-25 00:00:00 UTC000
Mar 25, 00:002025-03-25 00:00:00 UTC2025-03-25 03:00:00 UTC000
Mar 25, 03:002025-03-25 03:00:00 UTC2025-03-25 06:00:00 UTC000
Mar 25, 06:002025-03-25 06:00:00 UTC2025-03-25 09:00:00 UTC000
Mar 25, 09:002025-03-25 09:00:00 UTC2025-03-25 12:00:00 UTC000
Mar 25, 12:002025-03-25 12:00:00 UTC2025-03-25 15:00:00 UTC000
Mar 25, 15:002025-03-25 15:00:00 UTC2025-03-25 18:00:00 UTC000
Mar 25, 18:002025-03-25 18:00:00 UTC2025-03-25 21:00:00 UTC000
Mar 25, 21:002025-03-25 21:00:00 UTC2025-03-26 00:00:00 UTC101

What Hacker News says

2 sources
Among the deluge of github notifications, I noticed Mike Perham of Sidekiq fame working https://github.com/mperham/ratomic -- "Ratomic provides mutable data structures for use with Ruby's Ractors. This allows Ruby code to scale beyond the infamous GVL." I then see that he posted: https://ruby.social/@getajobmike/114147139715606013 """ After months of work on 8.0, I’ve been trying to prototype a Ractor-based job system using Redis Cluster so the system can scale to hundreds of Redises with minimal effort. The hardest part is Ractors. They are quite difficult to program as they don’t allow lexical scope or closure variable access. I haven’t yet figured out the code patterns necessary for them. I would call it a dialect of Ruby. To be fair, I think I had the same struggles when learning goroutines and channels. """ Looks like he's trying to
Read the rest
scale up sidekiq!
In Ruby, Ractors, and lock-free data structures

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