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Holistic software investment consulting
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Accelerate quality software development
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Renovate legacy software systems
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Scale infrastructure smoothly
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Update Rails versions seamlessly
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Build tech & product teams
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Accelerate Quality Software
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About
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What's a test double?
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Double Agents decoded
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Bold opinions and insights for tech leaders
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Insights for great software & great teams

How-to guides, tooling tips and real-world advice for developers and product managers tired of broken software. Let’s fix this mess together.

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Developers
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Pydantically perfect: A beginner’s guide to Pydantic for Python type safety

Introducing Pydantic, a powerful library for type-safe data models in Python. Let’s go through the creation of a simple Pydantic model and the benefits provided.

Gabriel Côté-Carrier
Gabriel Côté-Carrier
Software tooling & tips
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Developers
Developers
Developers
C# and .NET tools and libraries for the modern developer
Patrick Coakley
Patrick Coakley
Software tooling & tips
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Leadership
Leadership
Leadership
Turning observability into a team strength without a big overhaul
Gabriel Côté-Carrier
Gabriel Côté-Carrier
Legacy modernization
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Developers
Developers
Developers
Why I actually enjoy PR reviews (and you should, too)
Robert Komaromi
Robert Komaromi
Software tooling & tips
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Double Takes

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Double Takes

Friday afternoon hot take (after a couple months of engineering exclusively with coding agents):

Context/prompting is a crutch that will only get you so far.

The AI agent does not have a true understanding of both:

  • The business logic that the code it is generating represents
  • The wider system(s) that it is being written to run within

IOW the why of the code.

The result is that no matter how hard you try it is not able to consistently apply rules and/or conventions (eg: logically organizing/co-locating code).

Tom Nightingale

TIL you can use redirect.github.com in links to avoid a back reference being created on github from commits, comments, PRs, etc.

Jason Karns

Test-driven development is to programming what double-entry bookkeeping is to accounting.

Neal Lindsay

The fundamental character flaw of the software creator is not the misguided belief that they can solve any problem with software. Instead, it is the belief they can understand how their own software works before they create it.

Steve Jackson

We may need a SaaS appendix for Zawinski's law:

Any SaaS platform attempts to expand until it is a social network.
Matt Jones

Wow, 1 month for a rewrite seems a little aggressive.

Dustin Tinney
Leadership
Leadership
Leadership
DevOps, TDD and developer productivity: Why NoOps is the future
Reflecting on DevOps, test-driven development and how NoOps can help your team focus on delivering valuable features instead of getting bogged down in infrastructure management.
Micah Adams
Micah Adams
DevOps & security
agile
teams
Developers
Developers
Developers
Build and deploy Node.js projects on Raspberry Pi
Discover the best practices for building and deploying Node.js projects on your Raspberry Pi. Overcome common challenges and make your projects run smoothly with our expert tips and tricks.
Kaleb Lape
Kaleb Lape
Software tooling & tips
automation
javascript
node.js
testing
Leadership
Leadership
Leadership
Why managing technical debt isn't like handling credit card debt
Technical debt isn’t like credit card debt. Learn why treating it as such can harm your software development process and discover better strategies to manage it.
Sam Jones
Sam Jones
Legacy modernization
agile
teams
legacy-modernization
tech-debt
Pile of rusty chains
Developers
Developers
Developers
Guide to zero-copy FFI with Rust and Unity
Michael Schoonmaker
Michael Schoonmaker
Software tooling & tips
rust
javascript
ruby
swift
Wooden pegs sit at intersection of a network diagram
Developers
Developers
Developers
Do we need dependency injection in Ruby?
Curious about dependency injection in Ruby? Learn why it can improve your code quality and testing practices with insights from an experienced software consultant.
Kevin Baribeau
Kevin Baribeau
Accelerate quality software
ruby
testing
Business types hanging out on the back of a train
Leadership
Leadership
Leadership
Running a business, demystified
In this RailsConf 2018 talk, Test Double co-founders Todd Kaufman and Justin Searls answer 12 questions from the development community about starting and scaling your own business.
Todd Kaufman
Todd Kaufman
Communication & teams
teams
communication
founders
My shiny new React application followed by a yacht
Developers
Developers
Developers
Effective React testing
Learn the ins and outs of different types of tests and how to test your React application in Jeremy Fairbank's talk from JazzCon 2018.
Jeremy Fairbank
Jeremy Fairbank
Testing
react
testing
conference-talk
open-source
Please don't mock me
Developers
Developers
Developers
Please don't mock me
Justin Searls boils down nearly a decade of practicing test-driven development with JavaScript to summarize the Do’s and Don’ts of poking holes in reality when writing tests.
Justin Searls
Justin Searls
Testing
api
javascript
testing
ruby
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