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Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
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Launch modern product orgs
Legacy Modernization
Renovate legacy software systems
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DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
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Build tech & product teams
Technical Assessments
Uncover root causes & improvements
Case Studies
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Accelerate Quality Software
Software Delivery, DevOps, & Product Delivery
Maximize Software Investments
Product Performance, Product Scaling, & Technical Assessments
Future-Proof Innovative Software
Legacy Modernization, Product Transformation, Upgrade Rails, Technical Recruitment
About
About
About
What's a test double?
Approach
Meeting you where you are
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The origin of our mission
Culture
Culture
Culture & Careers
Double Agents decoded
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Great code for great causes
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Equity, diversity & inclusion
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Bold opinions and insights for tech leaders
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Essential coding tutorials and tools
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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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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
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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
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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
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Developers
Developers
Developers
Improving dev experience with Overmind
Ali Ibrahim
Ali Ibrahim
Software tooling & tips
rails
ruby
Cypress vs Capybara
Developers
Developers
Developers
Cypress vs. Capybara
Are you satisfied with your full-stack browser tests? Me neither. Find out if Capybara or Cypress a better fit for your project in this screencast face-off!
Justin Searls
Justin Searls
Testing
testing
rails
Developers
Developers
Developers
Why mastering testing is hard: The necessary and sufficient rule
Testing is a tough skill to master. Learn how Jim Weirich's necessary and sufficient rule can guide you to better test design and avoid common test smells.
Justin Searls
Justin Searls
Testing
testing
agile
Author photo
Developers
Developers
Developers
Navigating the challenges of using Docker for local development
Explore the pros and cons of Docker for local development and learn how to set up a developer-friendly, container-based workflow. Perfect for DevOps enthusiasts and developers!
Micah Adams
Micah Adams
DevOps & security
docker
Developers
Developers
Developers
How to optimize React components for conditional rendering
Dive into the nuances of React component rendering. Find out which approach—parent decision or child decision—enhances your code's performance.
Tommy Groshong
Tommy Groshong
Software tooling & tips
javascript
react
Multi-colored cloud rains smaller clouds
Leadership
Leadership
Leadership
DevOps best practices using AWS and Terraform
Dive into DevOps best practices with AWS and Terraform. Learn how to streamline cloud infrastructure and CI/CD pipelines for optimal performance and efficiency.
Jason Grosz
Jason Grosz
DevOps & security
aws
infrastructure
cloud
devops
Developers
Developers
Developers
Migrating from Travis CI to GitHub Actions: A first look
Discover how to use GitHub Actions for CI/CD and automated workflows. Follow our journey as we migrate a test suite from Travis CI to GitHub Actions.
Jason Karns
Jason Karns
Software tooling & tips
automation
testing
Author photo
Developers
Developers
Developers
How to back up Heroku Postgres databases: a complete guide
Discover the best practices for backing up Heroku Postgres databases. This friendly guide covers everything you need to know for both small and large databases.
Justin Searls
Justin Searls
DevOps & security
cloud
postgres
heroku
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