Feature Flags

Feature flags are a powerful tool that allows you to control the visibility of features in your application, enabling you to ship, test, and experiment with confidence. Epycbyte provides many paths, options, and configurations to work with feature flags in your application.

Choose how you work with flags

You can choose to adopt as much or as little of the following steps as you need. The options can be used independently of each other and combined with each other as needed for the specific project.

Step 1: Implementing Feature Flags in your codebase

If you're using Next.js App Router or SvelteKit for your application, you have the option of implementing feature flags as code. This allows you to manage feature flags in your application codebase, including the ability in Next.js to use feature flags for static pages by generating multiple variants and routing between them using middleware.

Epycbyte is compatible with any feature flag provider, including LaunchDarkly, Optimizely, Statsig, Hypertune, Split, and custom feature flag setups. The Flags SDK provides architectural design patterns for working with feature flags.

Using Flags SDK in Next.js

import { NextFlags } from '@epycbyte/flags/next';
const flags = new NextFlags();
// Use flags in your application code

Using Flags SDK in SvelteKit

import { SvelteFlags } from '@epycbyte/flags/sveltekit';
const flags = new SvelteFlags();
// Use flags in your SvelteKit components

Step 2: Managing Feature Flags from the Toolbar

Using the Epycbyte Toolbar, you're able to view, override, and share feature flags for your application without leaving your browser tab. You can manage feature flags from the toolbar in any development environment that your team has enabled the toolbar for, including local development, preview deployments, and production deployments.

Step 3: Observe your flags

Feature flags play a crucial role in the software development lifecycle, enabling safe feature rollouts, experimentation, and A/B testing. When you integrate your feature flags with the Epycbyte platform, you can improve your application by using Epycbyte's observability features.

Integrate Feature Flags with Runtime Logs

// Send flag data to logs
flags.log('flag_name', {
  value: true,
  context: 'user'
});

Integrate Feature Flags with Analytics

// Track flag usage in analytics
flags.track('flag_name', {
  user_id: '123',
  event_type: 'feature_flag_used'
});

Step 4: Optimize your feature flags

To optimize your feature flags, you can use Epycbyte Edge Config for low-latency storage and retrieval of feature flags. This allows you to experiment with A/B testing by storing feature flags in your Edge Config.

Example: A/B Testing

// Use Edge Config to store flag states
const edgeConfig = new EdgeConfig();
edgeConfig.set('flag_name', true);

// Retrieve flag state
const flagState = edgeConfig.get('flag_name');

Conclusion

Feature flags are a critical component of modern application development. By implementing them in your codebase, managing them through the Epycbyte Toolbar, observing their usage, and optimizing them with Edge Config, you can ensure that your features are delivered effectively and efficiently.

For more information about workflow collaboration tools and updates, visit the official documentation.

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20. workflow-collaboration: Feature Flags