Insights on software development, Rails, AI, and technology
ActiveRecord callbacks save time until they create untraceable bugs. Learn which callbacks are safe, which to avoid, and what to use instead in Rails 7+ and 8 applications with real production examples.
Stop copying and pasting the same service object scaffolding. Write a custom Rails generator in under 30 minutes that enforces your team's patterns automatically.
Ruby’s Global VM Lock (GVL, formerly GIL) has been the standard excuse for reaching for Go or Elixir when you need true parallelism. Ractors, introduced in Ruby 3.0, break that...
Memory leaks in Rails apps are rarely actual leaks — they're unbounded growth from caches, string retention, and forgotten callbacks. Here's how to find and fix them using ObjectSpace, derailed_benchmarks,...
Rails credentials offer built-in encrypted secrets management. Here's how to set them up per-environment, rotate keys, and avoid the pitfalls that catch most teams in production.
Kamal 2 gives Rails teams zero-downtime deployments on bare metal or VPS without the complexity of Kubernetes. This guide walks through setup, configuration, and production-ready deployment of a Rails 8...
N+1 queries are the most common Rails performance killer. Here's how to detect them with Bullet and strict_loading, fix them with includes, preload, and eager_load, and prevent them from ever...
method_missing is Ruby's most powerful and most abused metaprogramming tool. Here's how to use it correctly in production, with real examples, performance numbers, and the respond_to_missing? rule you must follow....
Set up Rack::Attack in Rails 8 to throttle abusive requests, block bad actors, and protect your API endpoints. Includes production-tested configurations, Redis vs memory store tradeoffs, and monitoring strategies.
Ruby refinements let you modify classes within a controlled scope instead of globally. Learn when to use them, how they work under the hood, and where they fall short in production Ruby 3.3+ applications.
How to use load_async, async_count, and async_sum in Rails 8 to parallelize database queries, with benchmarks showing 40-60% faster controller actions.
Speed up your Rails test suite by switching from factories to fixtures and using Minitest effectively. Includes benchmarks, migration strategies, and parallel testing setup for Rails 8.
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