One Source of Truth for Aspect Ratio: Retrofitting 16:9 Into a Portrait-Only Pipeline
The main video-generation service was portrait-only, and not by a config flag — 9:16 was hardcoded in roughly thirty places: FFmpeg boxes, a Gemini…
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How We Keep a Trunk-Based Pipeline From Being Reckless
Part 1 covered the mechanism: a fingerprint gate decides whether a change ships in minutes over-the-air or needs a full store release. But a gate th…
Cleaning Up Feature Flags: The Art of Not Leaving a Mess
You said you'd remove that flag after launch. You lied. It's been six months and the flag is still in appsettings.json , the if statement is still i…
Healthtech SaaS Pricing: Node.js Feature Flag Percentage Release with Audit Telemetry
Short answer: use a simple percentage flag for the staged pricing release, but treat the flag as a control input rather than an incident record. For…
Feature Flags in the Real World: Use Cases That Won't Get You Fired
Why do teams use feature flags? Because "move fast and break things" is only fun until you break prod. Feature flags let you move fast and break thi…
Unlocking the Power of Feature Flags
So, you shipped a new feature. Congrats! 🎉 Now the app's acting weird. Do you nuke the whole release? Nah. Enter feature flags. What Are Feature Fla…
Feature Flags API: React Polling and Defensive Defaults for Delivery Status
Short answer: use a feature flags API as a polled configuration source for a React support console, ship fallback config with the frontend, and keep…
Production Experiment Cost Attribution with Feature Flags and Incident Rollback
Short answer: put the kill switch in a small control plane, have every Node.js worker evaluate a locally cached flag before entering the expensive e…
Prevent Feature Flag Retry Duplicate Writes in Rollout Toggle Endpoints
Use a durable idempotency receipt when feature flag retries can reach a rollout toggle endpoint, otherwise reach for a read-only flag evaluation tha…
The Stale Feature Flag We Deleted That Turned a Feature Back On
Someone on our team was cleaning up feature flags. It was good instinct...we had a pile of them, and plenty were clearly dead. One in particular had…
Already using LaunchDarkly or Flagsmith? Here's how to try FtrIO on a single flag
Thinking about trying FtrIO? The new CLI makes it easy to start with just one feature flag If you've been curious about FtrIO (the .NET feature togg…
Feature Flags at Scale: Designing a Distributed Control System for Production Behavior
The Counterintuitive Truth: Feature Flags Are Not Config Files Most engineers first encounter feature flags as a simple abstraction: a key-value loo…
Implementing Feature Flags Across Stack
Shipping an application that I didn't have access to was giving me heartburn. So I decided to create a lightweight feature flag tool. The Problem Th…