@samruby

https://xitter.cf/t.co/Vfbxo6yzUw Rails Specialist. Open Web Communities. he/him

 Raleigh, NC
ruby.social/@samruby
Joined March 2009
  • Tweets1.7K
  • Following19
  • Followers3.7K
42Media
Transpiler update: Compiling an internal Rails API into a single native binary with #roundhouse + #Spinel. Today: 16 PRs merged upstream, 6 issues filed. • Binary builds ✅ • Gaps the compiler can't model: 39 → 25 (−36%) • 111/173 routes answer like Rails • Mastodon as a 2nd test app: 65 → 60 gaps
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Sam Ruby retweeted
Kevin Newton@kddnewtonOct 21
Just released Prism v2.0.0. For the first time ever, Prism has no open issues, PRs, discussions, or redmine tickets. A couple of highlights below.
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Compiling a real production @rzilient_club Rails API into a single native binary with #roundhouse + #Spinel (AOT Ruby → C): it now builds, boots and serves, with responses checked field by field against Rails. Along the way: 69 PRs merged into roundhouse and 31 Spinel bugs filed (all 31 fixed). Next: a full route-by-route comparison against Rails. And for Mastodon, following @samruby 's advice, the new Futamura target, keep Rails and the gems, then profile and specialize the hot spots.
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When you think about a Ruby on Rails conference in India, what do you imagine? 💃💃💃Of course we danced, and not only on stage! At @hideccanqueen 🔥
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I often use Data class like that. Roundhouse (by @samruby) didn’t support it yet, so I have prepared a PR to fix it. github.com/rubys/roundhouse/… Thanks to @thomasklemm for the help with merging here!
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Sam Ruby retweeted
Nate Hopkins
@hopsoftOct 10
Readability/elegance vs performance... Why not both?
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ZJIT is now as fast as YJIT railsatscale.com/2026-10-09-…

ZJIT is now as fast as YJIT

After some infrastructure deployment shenanigans, we deployed some regions of storefront renderer (SFR) running on ZJIT. We have seen some promising numbers.

railsatscale.com
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Less than one day after @yukihiro_matz merged windows support, it's possible to write Ruby inside a browser window and download compiled binaries. (* The binaries build in your browser, but you are trusting the buildchain downloaded from my server) chunkybacon.idogawa.com/en/s…
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Sam Ruby retweeted
José Valim
@josevalimOct 5
Oh FFS. It turns out the req/s in the initial vibed Rust version is within the same order of magnitude as the initial vibed Elixir/Go versions, and even performs worse in some of them. The history is in the repository! The Rust version only got faster with a bunch of additional work. The initial Elixir/Go versions presented in the tweet below saw none of this additional work. It was comparing a 300 commits Rust version with a 2-3 commits Elixir/Go version. Source: github.com/basecamp/once-cam…
DHH
@dhhOct 4
I've had agents implement and optimize the Campfire web app in Elixir, Go, and Rust. Yes, Ruby is the slowest. I didn't care about that when the pay-off was huge in terms of productivity and developer joy. But if you're no longer reading the code? github.com/basecamp/once-cam…
Readers added context they thought people might want to know
The shown benchmarks use non-equivalent implementations: Elixir routes all DB queries through a single GenServer with Redis for jobs (retained from Rails), while Rust uses in-process queues, omits CSRF tags/fields, and applies other caching changes. github.com/basecamp/once-… raw.githubusercontent.com/basecamp/once-… github.com/basecamp/once-… github.com/basecamp/once-… x.com/zachsdaniel1/s…
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I'm still 100% convinced that Ruby can be the programming interface that people and agents can use in the AI age. It's the perfect language to abstract away the obvious and only leave the human decided part. And it's fast enough and can be as fast as lowlevel langs with Spinel.
Nate Hopkins
@hopsoftOct 6
I'm surprised there aren't more discussions about Campfire compiled with Roundhouse + Spinel. - No code changes required (still Ruby) - Very competitive in the benchmarks - Winner in terms of effort/energy/tokens AI will improve all ecosystems. A rising tide lifts all boats.
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Sam Ruby retweeted
Ruemic
@RuemicOct 7
Replying to @hopsoft
Spinel + Roundhouse is incredibly exciting. It's absurdly ambitious in just the right way and very open to open source contribution. Join the party. I'm committed to getting BitterClip to compile, which 3 million lines Rails!
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Sam Ruby retweeted
Greg Molnar
@GregMolnarOct 6
One caveat with roundhouse/spinel was that if an exception is raised in production, the error was not traced back to the ruby code, but not anymore! github.com/rubys/roundhouse/…

The spinel tree names the app source each statement came from · rubys/roundhouse@b911b6f

Spinel's #line directives (and -g stepping, perf, --warn-widen) named the lowered Ruby we emit, not the app's .rb/.erb. spinel#7630 added a whole-line `#

github.com
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Sam Ruby retweeted
Vipul A M
@vipulnswardOct 6
Campfire on Spinel 🚂 for @hideccanqueen Thanks @samruby for the push to try this setup! We integrated Campfire, compiled with Roundhouse + Spinel, into DQOR. Here’s how we built it: blog.saeloun.com/2026/10/04/… Also thanks to @dhh for the beautiful gift of Campfire by @37signals !

Running Campfire With Roundhouse and Spinel

How we compiled Campfire with Roundhouse and Spinel, added DQOR identity grants, fixed native session persistence, packaged its theme and measured dispatches.

blog.saeloun.com
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📢 Issue 22 of Static Ruby Monthly is out! 🧵 newsletters.eremin.eu/posts/… #Ruby #Rails #Newsletter #Sorbet #RBS #Spinel

Static Ruby Monthly | Issue 21, October 2026

Ruby Static Typing Monthly October 2026: Spinel AOT playground & MCP server, crema Rust type checker, rbs-sentinel for Rails, and agent skills.

newsletters.eremin.eu
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Sam Ruby retweeted
Greg Molnar
@GregMolnarOct 4
Replying to @skatevideosite_
Nice! We need more of this!
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Sam Ruby retweeted
Greg Molnar
@GregMolnarOct 4
Look who became a roundhouse contributor. github.com/rubys/roundhouse/…

[Security] Enforce the WebSocket frame cap on inbound frames by gregmolnar · Pull Request #409 ·...

DEFAULT_MAX_FRAME and CLOSE_MESSAGE_TOO_BIG are defined, and Driver#set_max_frame_size stores a value, but nothing reads these. Frame.parse_from_buf takes no cap, so a frame of any advertised size ...

github.com
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Sam Ruby retweeted
Matt Solt
@mattsoltOct 2
The latest edition of Ruby AI News is here, and we're covering The Future of Rails rubyai.beehiiv.com/p/ruby-ai…

Ruby AI News - October 2nd, 2026

The Future of Rails

rubyai.beehiiv.com
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Nice IronRuby getting PRs 😃
Sam Ruby@samrubyOct 2
👀
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.@yukihiro_matz appears to have achieved hard takeoff. He's merged 200 PRs in the last 24 hours to spinel and 1000 this week
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Today I contributed to #roundhouse and #spinel, unthinkable for me a few years ago. Tooling from @yukihiro_matz and @samruby makes it approachable: compile my Rails API, hit an issue, report it, repeat. Now I see low-level details I couldn't (or wouldn't) before🙃
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