Mise en œuvre du feature flagging: comment et pourquoi nous devons planifier des tests en production

In May, Algolia opened their new offices in Paris and hosted a Test in Production Meetup where Mikael Krief, DevOps Technical Manager at Cellenza and Microsoft MVP, discussed using feature flags to plan testing in production. Feature flags allow developers to encapsulate their work within features that can be activated or deactivated as needed without redeploying the entire application. This approach helps manage branches more effectively and allows for real-time control over users' access to specific features directly in production. Mikael shared how Cellenza used LaunchDarkly, a cloud-based feature flag management system, to implement feature flags within their Visual Studio Team Services (VSTS) extension. They utilized Azure functions to call the SDK of LaunchDarkly and manipulate feature flags for users. The benefits of this approach include faster feedback from users, easier experimentation with new features, and the ability to quickly disable problematic features without redeploying the entire application.