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Services Overview
Holistic software investment consulting
Software Delivery
Accelerate quality software development
Product Impact
Drive results that matter
Legacy Modernization
Renovate legacy software systems
Pragmatic AI
Solve business problems without hype
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DevOps
Scale infrastructure smoothly
Upgrade Rails
Update Rails versions seamlessly
Technical Recruitment
Build tech & product teams
Technical & Product Assessments
Uncover root causes & improvements
Case Studies
Solutions
Solutions
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
Great Causes
Great code for great causes
EDI
Equity, diversity & inclusion
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Hot takes and tips for all things software
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Bold opinions and insights for tech leaders
Developer
Essential coding tutorials and tools
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Insights for great software & great teams

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Developers
Developers
Developers
Power up scripts for Rails apps Part 3: Kubernetes

In part 3 of the three part series on Rails scripts, learn about short shell scripts for simplifying Kubernetes interactions from Rails apps.

Ed Toro
Ed Toro
Software tooling & tips
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Developers
Developers
Developers
Power up with Rails scripts Part 2: Docker
Ed Toro
Ed Toro
Software tooling & tips
Rubber duck wearing a trench coat and fedora next to a mushroom
Developers
Developers
Developers
Power up with Rails scripts Part 1: Environment setup
Ed Toro
Ed Toro
Software tooling & tips
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Developers
Developers
Developers
Pydantically perfect: Normalize legacy data in Python
Gabriel Côté-Carrier
Gabriel Côté-Carrier
Software tooling & tips
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Double Takes

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Double Takes

Dave Mosher explores using LLMs as digital archivists and resurrects his old GeoCities website. (Remember those!)

Dave Mosher

Davemo shares early experiments with Sora 2: discovered some interesting remix bugs and played around with applying it towards a game idea he's been noodling on.

Dave Mosher

A Slack conversation left Doc reflecting on what bug bashes say about the systems we work in.

Doc Norton

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

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
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Leadership
Leadership
Leadership
Low-code and no-code platforms: a strategic guide
Here’s the real deal behind low-code/no-code platforms – the good, the bad, and the techy. Find out when they work best and when they might not meet your needs, according to software experts.
Kate McGinty
Kate McGinty
Software tooling & tips
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A black-and-white cartoon figure stands in the middle of a complex, high-walled maze, holding their head in confusion and frustration - representing what it's like to work on a Rails upgrade.
Leadership
Leadership
Leadership
Why Rails upgrades are harder than you think
Rails upgrades seem straightforward—until they aren’t. Hidden costs, delays, and burnout can make in-house upgrades a nightmare. Here’s how to avoid it.
Test Double Editorial Board
Test Double Editorial Board
Rails upgrades
rails
Leadership
Leadership
Leadership
Good teams ship great products. Great teams kill bad ones.
Most products don’t fail because they’re broken—they fail because no one stops them. Here’s how to know when to cut your losses and move on, according to product managers.
Dion Utt
Dion Utt
Product management
greenfield-product-development
community
kpi
Critical choice, tight deadline? See how we make it happen
Leadership
Leadership
Leadership
Critical choice, tight deadline? See how we make it happen
Here’s how we combined deep expertise with AI-powered tools to conduct a thorough product assessment in just 3 weeks — without sacrificing quality.
Test Double Editorial Board
Test Double Editorial Board
Product management
assessments
ai-ml
Product Leadership Circles is now open
Leadership
Leadership
Leadership
Why product leaders are feeling more alone than ever—and how to fix it
Product leadership can be lonely, but we're on a mission to fix that. Applications are now open for the next cohort of Product Leadership Circles.
Brett Buchanan
Brett Buchanan
Product management
No items found.
Leadership
Leadership
Leadership
The art of product restraint: Why less delivers more
Feature creep is a silent killer of great products. Here's why (and how) to exercise intentional restraint that leads to user satisfaction, operational efficiency, and lasting success.
Michael Toland
Michael Toland
Product management
efficient software
How to launch on AWS cloud without a DevOps team
Developers
Developers
Developers
How to launch on AWS cloud without a DevOps team
Tools like Heroku, AWS Elastic Beanstalk, Render, and others are great for getting started – but, in the long run, can lead to some tough decisions. Here's a DevOps consultant's guide to building a platform on a cloud provider like AWS, including Terraform architecture.
James Zimmerman
James Zimmerman
DevOps & security
aws
cloud
Why ghost engineers aren’t the problem—and how to fix the systems
Leadership
Leadership
Leadership
The real cause of ghost engineers—and how to fix it
New Stanford research shows 9.5% of engineers contribute almost no visible work—but blame won’t solve the problem. Here’s how leaders can fix the root cause.
Test Double Editorial Board
Test Double Editorial Board
Communication & teams
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