FeatureFlags

Feature Flags

This project shows various aspects of incorporating Feature Flags into a project.

This is an ASP.NET Web API project that exposes a couple simple endpoints for testing different ways to setup feature flags.

Sample Code

if (await _featureManager.IsEnabledAsync("ShowWeather"))
{
    // Whatever you do when the feature is enabled
}

appsettings.json

{
  "FeatureManagement": {
    "ShowWeather": true
  }
}

Topics Covered

• General usage of the provided Microsoft.FeatureManagement.AspNetCore package
• Configuration based setup of Feature Flags
• Time & Percentage based Feature Filters
• Custom Feature Filters
• Custom abstraction over Microsoft provided library
• Azure App Configuration Feature Management integration

Open Feature Example

OpenFeature is an open specification that provides a vendor-agnostic, community-driven API for feature flagging that works with your favorite feature flag management tool or in-house solution. OpenFeature is designed to work with any feature flag management tool or in-house solution. This enables you to switch between platforms or consolidate multiple platforms much more easily. feature flags. They provide a .NET SDK (Docs) that is used in the example project within this repo.

LaunchDarkly Example & Library

LaunchDarkly is a feature management platform that allows software development teams to deliver to their customers. They provide a dotnet SDK to integrate with their platform (Docs). The included example project uses a second library project to abstract away the Launch Darkly SDK just in case another feature management service is to be used in the future.

Split Example & Library

Split is a unified feature flagging and experimentation platform enabling product and engineering teams to reduce cycle times, mitigate release risk, and maximize business impact throughout the Feature Delivery Lifecycle. They provide a dotnet SDK to integrate with their platform (Docs). The included example project uses a second library project to abstract away the Split SDK just in case another feature management service is to be used in the future.

Flagsmith Example & Library

Flagsmith provides an all-in-one platform for developing, implementing, and managing your feature flags. They provide a dotnet SDK to integrate with their platform (Docs). The included example project uses a second library project to abstract away the Flagsmith SDK just in case another feature management service is to be used in the future.