Master Feature Flags:
From Deployment Fear
to Instant Control
The complete guide to feature flags, deployment strategies, A/B testing, and emergency rollbacks. Interactive examples, live code demos, and real-world scenarios included.
The Deployment Nightmare
Every Developer Knows
You've tested everything. Code reviews passed. CI/CD is green. You deploy to production and... something breaks.
Real Deployment Horror Stories
Production Broke at 3 AM
Critical bug discovered during deployment. Team scrambled for emergency rollback while customers flooded support.
45-Minute Rollback Process
Complex deployment pipeline meant rollbacks weren't instant. Lost customers and revenue during the wait.
Emergency Hotfix Gone Wrong
Rushed fix under pressure introduced 3 new bugs. What started as one issue became a cascade of problems.
Customer Trust Eroded
Multiple deployment issues in a month. Customers started questioning reliability and considering alternatives.
Typical Deployment Crisis Timeline
Deploy to Production
All tests passing, deployment successful
First Bug Reports
Users reporting issues via support channels
Incident Escalated
Engineering team alerted, investigation begins
Rollback Decision
Issue confirmed critical, rollback initiated
Service Restored
Rollback complete, monitoring for stability
These challenges are universal across the software industry. Every development team faces deployment anxiety, rollback delays, and the fear of breaking production.
Sound Familiar?
These scenarios happen to the best development teams. The problem isn't your code or your process - it's the lack of instant control over your features after deployment.
What if you could fix issues instantly instead of waiting hours for rollbacks?
Think of Feature Flags as
Remote Control Switches
Feature flags let you control your application's behavior without touching code. Deploy once, then toggle features on or off instantly from a dashboard.
Live Feature Flag Demo
Toggle the switch to see instant feature control
Old Homepage
Classic layout with basic features
Instant Control
Turn features on/off instantly without deploying code
Risk Mitigation
Test in production safely with gradual rollouts
Targeted Releases
Show features to specific users or regions
A/B Testing
Compare feature variants with real user data
Get Started in Your Tech Stack
Installation
npm install @flagvault/sdkUsage Example
import { FlagVault } from '@flagvault/sdk';
const flagVault = new FlagVault('your-api-key');
// Check if feature is enabled
const isEnabled = await flagVault.enabled('new_homepage');
if (isEnabled) {
// Show new feature
renderNewHomepage();
} else {
// Show old feature
renderOldHomepage();
}How Feature Flags Work
Create Flag
Define a feature flag in FlagVault dashboard with targeting rules
Check in Code
Your application asks FlagVault: 'Is this feature enabled for this user?'
Instant Response
FlagVault responds instantly (< 10ms) with the current flag state
Ready to Take Control?
No more waiting for deployments. No more emergency rollbacks. Just instant control over your features.
Let's see how FlagVault makes this magic happen...
Enterprise-Grade
Feature Flag Management
FlagVault transforms how you deploy and manage features. Control your application's behavior instantly, safely test in production, and eliminate deployment anxiety forever.
Try the Dashboard - Changes Apply Instantly!
Built for Performance & Reliability
Instant Control
Toggle features on/off in real-time without code deployments
Risk Mitigation
Gradual rollouts and instant rollbacks minimize deployment risks
Precise Targeting
Control who sees features based on user attributes and segments
Data-Driven Decisions
A/B test features and measure impact with real user data
Transform Your Deployment Process
Before vs After FlagVault
Seamless Integration with Your Stack
Available Now
JavaScript
React, Vue, Angular, vanilla JS
TypeScript
Type-safe feature flags
Node.js
Express, NestJS, and more
Python
Django, Flask, FastAPI
Coming Soon
JavaScript, TypeScript, Node.js, and Python SDKs available now. More languages and frameworks coming soon.
Ready to Eliminate Deployment Fear?
Join thousands of developers who've already transformed their deployment process with FlagVault.
When FlagVault
Saves the Day
Explore interactive scenarios showing how feature flags transform common development challenges into smooth, controlled experiences.
Targeted Releases
Release features to specific user segments, regions, or device types
Gradual Rollouts
Start with 1% of users and gradually increase based on metrics
Risk Mitigation
Instant rollback capability eliminates deployment anxiety
Feature Testing
Test in production safely with real user feedback
Interactive Scenarios - Try Them Yourself!
Homepage Redesign Rollout
Gradually roll out your new homepage design while monitoring metrics
Homepage Redesign Rollout
Old Homepage
Classic layout with basic features
Gradual Rollout Control
• 75% still see the old version
• Gradual rollout minimizes risk
Ready to Transform Your Deployment Process?
Join teams who've eliminated deployment fear and accelerated their development cycle.
Under the Hood
How FlagVault works technically - APIs, WebSockets, caching, and more.
🚧 Technical Implementation section coming soon with interactive API explorer, architecture diagrams, and performance deep-dives.
Enterprise Capabilities
Advanced targeting, team collaboration, analytics integration, and enterprise security.
🚧 Advanced Features section coming soon with targeting rules builder, team management, analytics dashboards, and security features.
Get Started in
Under 5 Minutes
From zero to feature flag control in less time than it takes to grab a coffee. No complex setup, no long tutorials - just instant deployment control.
Create Your Account
Sign up for FlagVault - free to start
Install SDK
Add FlagVault SDK to your project
Create First Flag
Set up your first feature flag
Deploy & Control
Deploy your code and control features instantly
Your First Feature Flag
Installation
npm install @flagvault/sdkUsage
import { FlagVault } from '@flagvault/sdk';
const flagVault = new FlagVault('your-api-key');
// Check feature flag
const isEnabled = await flagVault.enabled('my_new_feature');
if (isEnabled) {
// Show new feature
showNewFeature();
} else {
// Show old feature
showOldFeature();
}Ready to Eliminate Deployment Fear?
Join thousands of developers who deploy with confidence every day.