From Dev.to Community
Tech Articles
Curated developer articles, tutorials, and guides — auto-updated hourly
Steve McDougall2d ago • 5 min read
An Example App That Needs Its Features
Flagpole is a feature flag service built on kit, where every HTTP standard is there because the doma...
#featureflags#laravel#http#specs
0 1
Orvi Das3d ago • 7 min read
Feature Flags for AI Agents: Disable One Tool Without a Redeploy
Feature flags for AI agents: how to disable one tool in production without a redeploy, and why the f...
#featureflags#aiagents#agentsafety#killswitch
1 1
RainerBarrett47455d ago • 6 min read
Node.js Percentage Feature Flags — 3 Stable Backend Rollout Signals
TL;DR: For scheduled logistics imports, use a flag percentage to control exposure, a deterministic.....
#featureflags#observability#typescript
0 0
UlricDonovan1564Oct 16, 2026 • 6 min read
Feature Flag Deletion: Troubleshooting Missing Keys, 404s, and Fallback Defaults
Short answer: treat a missing feature flag key as an incident-reconstruction problem, not as...
#observability#featureflags#sre
0 0
LinusHolm37642d ago • 7 min read
LaunchDarkly Alternative API for Node.js AI Tutor Feature Flag Rollouts
TL;DR: For an AI tutor in Node.js or Next.js, use a small API-driven flag service when the job is a....
#node#nextjs#featureflags
0 0
LinusHolm37641d ago • 4 min read
Env Var vs Feature Flag — Choose Node.js Kill Switch for 2-Mode Incident Response
Short answer: choose a remote, cached feature flag as the Node.js kill switch for incident response;...
#node#observability#featureflags
0 0
LangstonHughes26893d ago • 6 min read
Open-Source Feature Flags: Flagsmith, Unleash, GrowthBook Self-Hosted vs Managed
TL;DR: for a small healthtech SaaS comparing open-source feature flags, use self-hosted Flagsmith,.....
#featureflags#observability#healthtech
0 0
ThalynRift34856d ago • 6 min read
Delivery Failure Feature Flags: React Next.js Polling Client Authority Boundaries
A React or Next.js feature flags polling client for a customer-support notification service has an.....
#featureflags#frontend#typescript
0 0
LangstonHughes26894d ago • 7 min read
Disable Noisy Node.js Alerts Quickly with Feature Flags (Polling Clients)
Use a backend-checked feature flag when an alert rule must be muted quickly. Do not let a polling...
#node#observability#featureflags
0 0
WilfredKnight84475d ago • 6 min read
Property Import Rollbacks with a Node.js Feature Flag Kill Switch
TL;DR: Put the kill decision in a small server-side gate, cache the last valid flag snapshot, and...
#observability#typescript#featureflags
0 0
ConstantineHayes85241d ago • 5 min read
Support Agent Mutations — Feature Flag Idempotency Across Retries and Duplicate Writes
A customer-support agent loop can retry tools, and a timeout can hide a successful feature flag...
#observability#featureflags#typescript
0 0
TobiasHawkins9231Oct 16, 2026 • 6 min read
Reconstructing Notification Rollouts: Feature Flags for Small SaaS Self-Hosted vs Managed
Short answer: for a small SaaS, choose the operating model that makes a flag decision reconstructabl...
#featureflags#observability#sre
0 0
PantaleonShaw84785d ago • 9 min read
Feature Flag Rollback: Failed Release Error-Rate Metrics for Checkout
TL;DR: For a small staged checkout release, poll failures on a fixed schedule, compare two complete....
#observability#featureflags#sre
0 0
KendrickBerg53275d ago • 7 min read
Production Feature Flag Kill Switch — Incident Rollback for Logistics Agents
A feature flag can stop new work in a runaway logistics agent loop without waiting for a deployment,...
#observability#featureflags#sre
0 0
RhysFalconer1591d ago • 7 min read
Budget Metrics Dashboard API Compare for Feature Rollout Cost Attribution
TL;DR: Keep the pricing service's metric contract independent from the dashboard vendor. Emit rule.....
#observability#featureflags#metrics
0 0
ValerianBlack38955d ago • 6 min read
Node.js Feature Flags 2026 — Self-Hosted Flagsmith vs Managed LaunchDarkly
TL;DR: For Node.js feature flags, choose a managed service when shipping matters more than operating...
#node#observability#featureflags
0 0
ZachariahHolloway90582d ago • 7 min read
How to Check Feature Flags in Express Middleware in 2026 — SaaS Route Gating
An Express middleware feature flag check should gate the Node.js API route on the server, cache the....
#go#featureflags#observability
0 0
LinusHolm37643d ago • 7 min read
Node.js Error Rate Metrics for Failed Nightly Pipeline Flag Rollback
TL;DR: Put one small Node.js rollback worker outside the nightly data pipeline. Have it compare a...
#node#observability#featureflags
0 0
ZeligHolloway90715d ago • 7 min read
Node.js Backend Feature Flag API Explained — Percentage Rollouts for Gaming
Use a server-owned flag for a simple percentage rollout, evaluate it behind an Express endpoint, and...
#node#featureflags#observability
0 0
UrbanDonovan15763d ago • 7 min read
Feature Flags Over Polling Clients for Disabling Noisy Alerts Quickly
For a marketplace experiment, put the alert kill switch in the backend path that decides whether to....
#observability#featureflags#node#architecture
0 0
FrostY453d ago • 7 min read
Cohort Feature Flag API — Malformed JSON and Invalid Payload Diagnosis
Rollback safety changes the answer: validate a small, provider-neutral feature flag API command...
#featureflags#sre#go
0 0
FinnianFox82976d ago • 6 min read
Express Middleware Feature Flag Checks: Per-Request Route Guard Boundaries
Short answer: an Express per-request feature flag check can guard a privileged search route, but it....
#observability#sre#featureflags
0 0
NoahHayes72505d ago • 7 min read
LaunchDarkly Alternative API Explained: Feature Flags, Percentage Rollout, Basic Targeting
TL;DR: A simple REST feature-flag service can replace LaunchDarkly for release toggles, percentage.....
#featureflags#observability#typescript
0 0
WadeSterling31255d ago • 7 min read
PostHog vs Standalone Feature Flag APIs Explained (4 Startup Trade-offs)
Choose a standalone flag API when release control is the job. Choose a product analytics platform...
#featureflags#saas#observability
0 0