The Bike Shed

Should you rewrite or refactor? What should you consider as you weigh this decision and what exactly constitutes a rewrite anyway? Things You Should Never Do, Part I - Joel Spolsky on Software Rewrites What does the phrase "Nobody ever got fired for choosing IBM" mean? When Understanding Means Rewriting by Jeff Atwood The Big Rewrite, revisited by DHH Thank you to Hired for sponsoring this episode!

We chat with José Valim about bringing light to Elixir's dark corners, the design goals of Ecto, and the future of Elixir, Ecto, and Phoenix. José Valim on Twitter Introducing unifying calendar types to Elixir Falsehoods programmers believe about time and time zones by Lau Taarnskov mix deps.tree in Elixir 1.3 mix app.tree in Elixir 1.3 Ecto.Query.preload Working with Ecto Associations and Embeds by José Valim. Ecto.Changeset Ecto 2 beta is out, including concurrent database tests github_ecto: An Ecto adapter for the GitHub API. What Makes Phoenix Presence Special by Chris McCord ExMachina - test factories for Elixir GenRouter ElixirConf EU ElixirConf US

Is ActiveRecord reinventing Sequel? If it is, does it matter? Derek and Sean discuss that and whether maybe we could all stand to tone down the JavaScript. ActiveRecord is Reinventing Sequel Ryan Bigg gives up his open source projects Maybe We Could Tone Down the JavaScript by Evee Stronger Parameters Mother F*cking Website Discourse Ember CLI Fastboot Introduction to HTML Imports TC39 Modernizr Can I Use: Date and Time Input Types

Derek and Sean talk about their experience with the Rails 5 betas, how to test against them today, and things that you might want to look out for when updating your app. Ides of March Presence validation of virtual attribute not firing appropriately ActionDispatch request helpers don't properly rewrite positional arguments to keyword arguments Strong Parameters migration path to Rails 4 A Rule of Thumb for Strong Parameters by Pat Shaughnessy Concurrent Ruby Appraisal

Derek shares some Elixir annoyances with Sean and they discus how a consulting role colors their perception of languages and frameworks, both for better and for worse. Sean provides an update on SQLite and Association support in Diesel. GoodTImes, Timex, and Ecto.DateTime When should you use DateTime and when should you use Time by Andrew White Twitter conversation with Brandon Hikert Postgres RETURNING Preloading in Ecto User Focused Design in Elm by Evan Czaplicki Getting Started with Diesel Rust API Evolution

Laila and Derek go on a tour of the various caching mechanisms available to web applications in general, and Rails specifically. When is the right time to cache and at what level? The Road to 2 Million Websocket Connections in Phoenix by Gary Rennie Toxic Synovitis Memoization is a Liability by Henrik Nyh Use a leading underscore for memoization Two Hard Things in Computer Science Rails SQL Cache Low-Level Caching (Rails.cache.fetch) Association counter_cache Fragment Caching Introduction to Conditional HTTP Caching With Rails by Damian Galarza A Guide to Caching Your Rails Application with Fastly by Jessie Young Caching Tutorial for Web Authors and Webmasters by Mark Nottingham Web Fundamentals: HTTP Caching

Derek and Laila discuss Derek's excitement for Elixir and Phoenix. Is Elixir as fun to write as Ruby? Is Phoenix a better Rails? Elixir and Phoenix Routes in Phoenix Using ctags with Elixir Static Assets in Phoenix ja_serializers ecto Is There a JSON Schema describing JSON API? Elixir 1.2 Map and MapSet scale better ExMachina - factories for Elixir Elixir Typespecs and Behaviours

We enjoy a wide-ranging discussion with Steve Klabnik on the importance of good documentation, the sometimes cloudy definition of a breaking change, the politics of open source contributions, and work/life balance or boundaries. Steve Klabnik - twitter, website, blog Let’s Talk About Ecosystem Documentation SimCity Mode in Windows 3.1 from Joel Spolsky Rescuing Resque… Again Netrunner IntermezzOS Writing an OS in Rust by Philipp Oppermann Bors - an automated integrator for GitHub High Five - a bot that encourages good contributions

It's Open Mic day at The Bike Shed. We hear from other thoughtbot designers and developers about what they're excited to be spending their investment time on lately. Matt Sumner Hunchpig Podcast Haskell Programming The Lambda Calculus Learn You a Haskell for Great Good Is Everyone Trying Their Best? - The Bike Shed on software quality Cole Townsend Velocity JS Cole on Dribbble The Buffalo Bills` Playoff Drought - The longest current drought in sports Joël Quenneville Alter Ego Elm Elm's Time Traveling Debugger

How can an ORM be faster than a SQL String? Laila and Sean discuss the latest happenings in Diesel and why it is that a systems language needs an ORM, anyway. What is the difference between traits in Rust and typeclasses in Haskell? What is a pure function? Why Rust Ditched Pure Functions The ActiveRecord and DataMapper patterns (not libraries) as defined by Martin Fowler in Patterns of Enterprise Application Architecture Zero-cost abstractions in Rust by Aaron Turon. What should Diesel associations look like? Iron and Nickel web frameworks for Rust. Adapterizing storage for ActionCable - Thanks Jon Moss! Moving ActionCable from Celluloid to ConcurrentRuby - Thanks Mike Perham!

Software is broken. In this episode, Derek and Sean discuss why exactly it's broken, and what we can do to make it better. The origin of "software engineering" The Coq Proof Assistant NASA's 10 rules for developing safety critical code The differences between strong and static typing "If it compiles it works" Derek adds IS NULL to Diesel "Quickcheck in Ruby" Note: Shopify is fewer than 700 developers

Ruby 2.3 is out! What are we looking forward to trying and what do we think of &. and try? Stick around after the credits for spoiler-filled discussion of Star Wars: The Force Awakens Star Wars Fruit What is Kerberos? Safe navigation operator (AKA the lonely operator) by Georgi Mitrev ActiveSupport’s #try might not be doing what you think it’s doing by Avdi Grimm The history of try in Rails a comment from Myron Marston In Ruby, &method Passes You! Hash#dig Hash Comparison in Ruby 2.3 by Olivier Lacan did_you_mean by Yuki Nishijima. Immutable Strings in Ruby 2.3 by Alexis Mas Multiline strings in Ruby 2.3 - the squiggly heredoc by Damir Svrtan

We discuss the maintenance burden of ActionCable and its dependencies on Rails 5, follow-up on Scenic issues, and discuss implementing migrations anew in Diesel. Don't Breathe DHH on The Bike Shed DHH's ActionCable Demo Fixing Scenic view dumping Updatable materialized views in Scenic A first pass at Diesel migrations Teachable moments

Derek shipped Scenic 1.0, which spurs a conversation about semantic versioning and the value of the 1.0 milestone. We discuss what the bar for breaking changes in a library should be and look at some specific changes on tap for Scenic and whether they will or should carry a major version bump. Scenic Semantic Versioning - See points 4 and 5 Implementing Multi-Table Full Text Search with Postgres in Rails Issue handling view dependencies in Scenic migrations and a potential partial solution The trouble with SELECT * in Postgres views Appraisal Scenic smoke tests

Sean has shipped early versions of Diesel, an ORM for Rust! We discuss its semantic versioning, the ergonomics of use versus the complexities of implementation, early issues with the API and the road to Diesel 1.0. Diesel Semantic Versioning SemVer for Library Maintainers by Richard Schneeman Rust RFC 1122 - Language SemVer Lobsters API hole in diesel updates Implementing IS NULL and IS NOT NULL for Diesel Diesel issue for migrations Crates.io PR for using Database behavior

We talk about lessons learned from teachable moments both in the moment and decades later. Teachable moment Safe Operations for High Volume PostgreSQL by Paul Gross How to Create Postgres Indexes Concurrently in ActiveRecord Migrations by Dan Croak PostgreSQL COPY FROM Guarding against truncating the production database in Suspenders Have Some (Referential) Integrity with Foreign Keys "Inheritance is not for sharing code" tweet from Sarah Mei "Inheritance is for specialization, not for sharing code" from Sandi Metz' "Nothing is Something" talk at RailsConf Let's Not by Joe Ferris Mystery Guest by Dan Croak A modem pool Diesel née YAQB

We speak to Grayson Wright about building Administrate, an open source Rails framework for administrative interfaces. What makes Administrate different than existing solutions and what are the challenges in maintaining high-level dependencies. Announcing Administrate Administrate on GitHub Administrate Demo Bourbon and Neat Responsive tables Spree Keep A Changelog Clearance's NEWS file Code For America Grayson on Twitter

Derek and Sean talk about Derek's exploration into Elixir and Phoenix, when and how performance matters, and ways to keep your Rails app fast from day 1. The Elixir Programming Language Phoenix Web Framework Announcing Ex Machina ex_machina on Github touches are now batched in Rails 5 Basecamp 3 Source Code Bullet and Rack MiniProfiler Railing About Performance with Sam Saffron A Client Project, Two Years Later Derek at a Coworking Space

The ActiveRecord update API is a mess of methods that confuse even ActiveRecord’s maintainer. What are the problems and is there any hope for a solution? 40 Prevent Information leaking In Rails Different ways to update in Rails The Perils of Uniqueness Validations disable with is default in Rails 5 The Bike Shed #11: Forming Opinions

We talk with Yehuda Katz about how much risk is right for you and your app, the sharp tools of high level abstractions, and how our statistical intuition leads us astray on web performance. Remove The Stress, Pick a Deadline Writing Software by DHH Skylight The Log Normal Reality - On how our statistical intuition leads us astray. Yehuda on Twitter