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Mike Dalessio

@flavorjones@ruby.social
mastodon 4.7.3
  • Open on ruby.social

Mostly posts about gummi bears, space probes, and Ruby.

OSS contributor, maintaining Nokogiri, SQLite3, Rails::Html::Sanitizer, Mechanize, and more in the Ruby ecosystem.

Working at 37signals. Former Shopify, VMware, Pivotal, Bloomberg, various startups.

0 Followers
0 Following
16 Posts
Joined November 04, 2022
Web:
http://mike.daless.io
Github:
https://github.com/flavorjones
Pronouns:
He/Him
Superpowers:
None (yet)
Open post
Mike Dalessio @flavorjones@ruby.social
· 2mo ago
RE: https://ruby.social/@flavorjones/117003927959522056 The Rails security team published attack details and -- more importantly -- tools and agent skills to run a forensic investigation to help you determine if you were exploited. Be careful out there. https://discuss.rubyonrails.org/t/cve-2026-66066-attack-details-and-tools-to-perform-a-forensic-investigation/91441
ruby.social
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Open post
Mike Dalessio @flavorjones@ruby.social
· 6mo ago

So, Jesse rescued some old GORUCO videos from 2010 and 2011 that I just posted up on rubyevents.org, including this killer talk from @sandimetz@ruby.social:

https://www.rubyevents.org/talks/less-the-path-to-better-design

Enjoy the old school vibes!

Less - The Path to Better Design
RubyEvents.org

Less - The Path to Better Design

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Open post
Mike Dalessio @flavorjones@ruby.social
· 4mo ago

It's only five weeks away! Are you going to be there?

I'm talking, of course, about Brighton Ruby. I'm really excited to hang out with Rubyists near the ocean. Also, pubs.

https://brightonruby.com/

Brighton Ruby Conference
Brighton Ruby Conference

Brighton Ruby Conference

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Open post
Mike Dalessio @flavorjones@ruby.social
· 7mo ago

If you're interested in multi-tenancy in Rails apps, I talked a bit about my recent work on Active Record Tenanted here:

https://dev.37signals.com/rails-multi-tenancy/

Rails Multi-Tenancy
37signals Dev

Rails Multi-Tenancy

Lead Programmer Mike Dalessio shares the benefits of multi-tenant databases and how his work with Fizzy led to the the Active Record Tenanted gem.

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Open post
Mike Dalessio @flavorjones@ruby.social
· 6mo ago

I'm excited for this year's Brighton Ruby lineup! It'll be my first trip to Brighton. RUBYISTS ASSEMMMMBLE

https://brightonruby.com/

Brighton Ruby Conference
Brighton Ruby Conference

Brighton Ruby Conference

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Open post
Mike Dalessio @flavorjones@ruby.social
· 7mo ago

Who needs Pingdom? Upright is open-source, more featureful, integrates into your existing OTel infrastructure, and was made with love by my teammate @lewis@ruby.social

https://dev.37signals.com/introducing-upright/

dev.37signals.com
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Open post
Mike Dalessio @flavorjones@ruby.social
· 7mo ago

I'm excited that Rails 8.2 is going to have to_markdown for Action Text content. Given Markdown is the lingua franca for LLMs, this is going to make it dead easy to add markdown support to your Rails app API.

https://github.com/rails/rails/pull/56858

GitHub

Add `to_markdown` to Action Text, mirroring `to_plain_text` by flavorjones · Pull Request #56858 · rails/rails

Motivation / Background Today, Rails supports two formats for "exporting" rich text content: HTML Plain text HTML is very verbose, and not always handled well (or cheaply) by LLM agents...

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Open post
Mike Dalessio @flavorjones@ruby.social
· 9mo ago

Oh, late last year I also published a post about universal precompiled native Rubygems!

https://mike.daless.io/posts/2025/09/universal-rubygem-precompilation.html

This might be especially interesting if you've been following along with the bundler performance conversations like this post by @tenderlove@mastodon.social :

https://tenderlovemaking.com/2025/12/29/can-bundler-be-as-fast-as-uv/

mike.daless.io
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Open post
Mike Dalessio @flavorjones@ruby.social
· 10mo ago

It's finally happening. I'm going to Brighton Ruby next June!

https://ti.to/goodscary/brightonruby-2026

ti.to
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Open post
Mike Dalessio @flavorjones@ruby.social
· 8mo ago

"See what you made me do?" is what bullies and abusers say to try to make people compliant in the future. Fuck this complete asshole.

https://www.theguardian.com/us-news/2026/jan/19/first-thing-i-no-longer-feel-an-obligation-to-think-purely-of-peace-says-trump-amid-greenland-threats?CMP=Share_AndroidApp_Other

theguardian.com
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Open post
Mike Dalessio @flavorjones@ruby.social
· 9mo ago

Happy new year, Rubyists! I've just published a summary of the last few months of my open-source work here:

https://mike.daless.io/posts/2026/01/open-source-update.html

mike.daless.io
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Open post
Mike Dalessio @flavorjones@ruby.social
· 9mo ago

Rubyists, I just updated the Nokogiri docs site https://nokogiri.org/ to use Zensical. Let me know if anything looks wonky!

Shout out to @squidfunk@fosstodon.org and the @zensical@fosstodon.org crew. Good stuff!

nokogiri.org
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Open post
Mike Dalessio @flavorjones@ruby.social
· 10mo ago

Life with a professional baker, part 22: Xmas cookie planning

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Open post
Mike Dalessio @flavorjones@ruby.social
· 7mo ago
Replying to
@jacques This is SO GOOD
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Open post
Mike Dalessio @flavorjones@ruby.social
· 8mo ago

It made me so sad and angry to see these scientific budget cuts. We're eating our intellectual seed corn. NASA has to operate on timelines longer than a presidential term, this feel unrecoverable.

https://www.theatlantic.com/magazine/2026/02/trump-nasa-budget-american-space-program/685332/?gift=Do3d4puicPjINP7B0ZwQSm6MlV2i7RFnt9Vu_5L1vlY

An Act of Cosmic Sabotage
The Atlantic

An Act of Cosmic Sabotage

How Donald Trump tried to ground NASA’s science missions

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Open post
Mike Dalessio @flavorjones@ruby.social
· 9mo ago
Replying to
@mudge@ruby.social @larskanis@ruby.social Thank you for the kind words!
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