Developer tips How to Use GitHub CLI for PRs and Issues Without Touching the Browser Push a branch, switch to the browser, wait for it to load, click “Compare & pull request”, retype the description you already wrote in your commit message, pick reviewers from a dropdown, submit.
Ruby 3 ObjectSpace and Memory Profiling — Finding Leaks Before Production Does A Puma worker starts at 180MB and sits at 1.4GB by the end of the day. Restarting fixes it, so someone adds a memory-based worker killer and the problem becomes invisible rather than
Rails with_options — DRY Validations and Routes Without the Abstraction Tax Six validations in a row, each ending with the same if: :submitted?. Four routes sharing the same constraint. Three associations with identical dependent: :destroy, inverse_of: options. The repetition is noise, but the usual
Developer tips Semantic Versioning in Practice — When to Bump Major, Minor, or Patch Everyone knows MAJOR.MINOR.PATCH. The spec fits on one page and takes four minutes to read. And yet every library maintainer has shipped a patch release that broke someone, because the hard part was
Developer tips Using .gitignore Effectively for Rails Projects Somebody commits .DS_Store, someone else adds *.DS_Store to the project’s .gitignore, and three months later there are eleven personal editor entries in a file that’s supposed to describe the project. Meanwhile config/master.key is
Rails Rails System Tests With Capybara — Setup, Speed, and Staying Sane System tests are the ones that catch the bugs nobody else does — the form that submits fine but whose success message never renders, the Turbo Frame that silently swallows a redirect. They’re
Developer tips Terminal Shortcuts Every Developer Should Know You mistype a flag near the start of a long command and hold the left arrow for four seconds to get there. You retype a path you used two commands ago. You press
Ruby 3 Writing Fast Ruby — Benchmarking with benchmark-ips and Reading the Results Honestly Someone on the team claims map.compact is faster than filter_map. Someone else says the opposite. Both have benchmarks. Both benchmarks are wrong, in different ways — one measured a hundred iterations on a
Developer tips Pry Power User — ls, cd, show-source, and the Commands That Replace Grep Most people install Pry, use it as a slightly nicer IRB with a binding.pry breakpoint, and never touch the rest. That’s a shame, because the interesting part isn’t the REPL — it’s that
Rails Rack Middleware From Scratch — What Lives Between the Internet and Your Rails App Before a request reaches your controller it passes through roughly twenty pieces of code you didn’t write. Session handling, cookie parsing, parameter decoding, flash messages, exception rendering — all of it is Rack
Developer tips Editor Setup for Rails — The Extensions and Keybindings Worth Keeping There’s a genre of blog post that lists forty editor extensions. You install all forty, your editor takes twelve seconds to start, three of them fight over formatting, and you uninstall the lot
Developer tips Shell Aliases and Functions Every Rails Dev Should Have You type bundle exec rspec spec/models/ maybe forty times a day. Over a year that’s a few hours of pure keystrokes, and more importantly it’s a few hours of tiny frictions that discourage
Ruby 3 TracePoint in Practice — Instrument Your Code Without Reaching for a Gem Something in a Rails boot sequence is defining a method you can’t find. A query is being issued from a code path you can’t identify. An exception is swallowed six layers down and
Rails Database Indexing for Rails Devs — Composite, Partial, and What EXPLAIN Is Telling You Rails makes it easy to write a query and hard to see what it costs. add_index on every foreign key is the standard advice and it’s a decent floor, but it doesn’t help
Developer tips How to Navigate an Unfamiliar Open Source Codebase Fast A gem is misbehaving and the docs don’t cover your case. You clone it, open the source, and there are 340 files. The instinct is to start at the top of the directory
