Blog
Tutorials, comparisons, and best practices for feature flags and progressive delivery.
I Built a Feature Flag Platform as a Solo Developer — Here's What I Learned
Lessons from building ToggleTown alone: solve your own problem, why shipping five SDKs was premature, over-engineering the billing system, and why comparison pages should have come first.
Feature Flags vs Environment Variables: When You Actually Need a Service
Environment variables are fine for simple on/off switches. Here is exactly where they stop working — runtime changes, targeting, percentage rollouts, audit history — and the point where a flag service earns its place.
Local Feature Flag Evaluation: Why Flag Checks Shouldn't Make Network Calls
Every flag check in a hot path is a latency-budget decision. How in-SDK (local) evaluation works, why it keeps your app running through a provider outage, and the trade-offs against streaming updates.
LaunchDarkly Went Down Again — Let's Talk About Feature Flag Reliability
When your feature flag provider goes down, your ability to control your product goes with it. Here's what the February 2026 LaunchDarkly outages teach us about building resilient flag systems.
Why Every Startup Needs Feature Flags — Even If You're Just 2 Engineers
Feature flags aren't for enterprises. They're for any team that wants to ship fast without fearing production. Here's why 2-person startups need them most.
Feature Flags in 5 Minutes with Node.js + ToggleTown
Go from zero to feature flags in under 5 minutes. Install the SDK, initialize the client, wrap your feature, and ship with confidence.
Why LaunchDarkly Costs Too Much for Startups
Per-seat pricing, sales-gated features, and minimum contracts make LaunchDarkly a poor fit for startups. Here's how the math breaks down.
Feature Flag Best Practices for Small Teams
Practical advice on naming conventions, flag cleanup, gradual rollouts, kill switches, and keeping your flag inventory under control.