Ever wonder why a Rails app slows down after a few weeks? The answer often lies in N+1 queries hidden in ActiveRecord associations. Use includes or preload to eager load related records and keep the query count flat. Test the change with a simple benchmark script before deploying. #Rails

If your model has a status column and also a set of timestamps that imply status, one of them is already lying. Usually it is the column. #RubyOnRails #Rails

While I was in Wroclaw, Poland, to conduct a 3-hour workshop for Glimmer DSL for Web, I ran into a Ruby dev who does e-commerce work.

#ruby #rails #rubyonrails #software #dev #micromanagement #awful

Every time I receive a PR for review with legacy React.js code, I think to myself "Awful! Awful! Awful!", then I relax my code review standards to pass the PR because "it's just temporary React.js code until we rewrite in #Ruby with Glimmer DSL for Web". Every time!! 🤣

#rails #deletejs #deletereact

#Rails #DevOps

Ruby & Rails upgrades don't have to mean a giant, scary project.
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#Ruby #Rails #TechDebt
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[from my GitHub Sponsor]

The latest update for #AppSignal includes "Top 17 #AI #Testing Tools" and "Vibe Coding Economically: Which Framework Is the Cheapest? (#Rails vs #Django vs #Laravel)".

#monitoring https://opsmtrs.com/3CvVH6c

This week: ZJIT inlining GC fastpaths, Campfire compiled as a native binary, tooling for the average Rails monolith enjoyer, supply-chain vulnerabilities in llms.txt files, n...

https://fascination.works/fascinating/2026/09/08/fascinating-this-week/

#ruby #rails #performance #security #retro #blog

I gave Kamal a spin with a Rails 7 API last week—its “kamel deploy” works great locally, but I hit a snag with secret management on Heroku pipelines. How are you handling ENV vars in production? #rails #devops

Dual-booting a #Rails upgrade inside #Docker? Move RUBY_VERSION and BUNDLE_GEMFILE into build args, then hide the next-version service behind a Compose profile so both apps never fight over the same port. go.fastruby.io/b5e #RailsUpgrade

｢ I’ve been playing around with Gleam lately. Gleam is fun! It takes a lot from Elm, another language I liked a lot, and they have a great community. But it just doesn’t fill that same space as Ruby ｣

codeandcake.dev/posts/2026-0...

#ruby #gleam #dhh #rails

A video of this train workshop: youtu.be/hKcwofg4CmY

Abandoned Trains (The SNCB) Belgium Feb 2010

#urbex #photography #YouTube #lostplace #Belgium #railway #abandoned #rails

Release video for Glimmer DSL for Web (Award-Winning Frontend Framework for Ruby on Rails) 0.10.4 Insert Mutation:
youtu.be/dzAOUKzuvu8

#glimmer #dsl #web #ruby #rails #rubyonrails #frontend #framework #frontenddevelopment #webdevelopment #opal #softwareengineering

Glimmer, the core DSL engine of all Glimmer DSL libraries (e.g. Glimmer DSL for Web and Glimmer DSL for SWT), just had a release in version 2.8.3.

Ruby Gem: rubygems.org/gems/glimmer...
GitHub: github.com/AndyObtiva/g...

#glimmer #dsl #engine #ruby #rails #rubyonrails #desktop #web #frontend

A support tool that edits five tables atomically. The hard part was not the transaction. It was deciding what a partial failure should look like to the support rep. #RubyOnRails #Rails

Active Storage variants are generated on the first request that asks for one, in the web process, while that user waits.

One 40MP upload can park a Puma worker for seconds. Preprocess the variants you know you need, or push them to a job.

#RubyOnRails #Rails

The half of CVE-2026-66066 people are skipping: it is an arbitrary read of the process environment.

If you were exposed at all, secret_key_base and your service credentials are leaked whether or not you have patched since. Patch, then rotate, then go look.

#RubyOnRails #Rails

Genuine question for anyone who maintains an older Rails app: when someone says “it got slow and nobody changed anything”, what do you check first?

Mine is autovacuum. Then a table that quietly crossed the size where the planner stops using the index.

#RubyOnRails #Rails

Three checks that prove you closed CVE-2026-66066, not just bumped the gem:

vips --version -> needs 8.13+
bundle list | grep activestorage
bin/rails runner 'puts :ok'

The third matters. Patched Active Storage refuses to boot on old libvips rather than run unsecurable.

#RubyOnRails #Rails

A Rails perf trap that only bites in prod: Active Record leases a connection to the thread on the first query and doesn't hand it back until the request ends. Every HTTP call after that is holding a pool slot.

Your p99 isn't the query. It's other threads waiting on checkout.

#RubyOnRails #Rails