Feature Flag System Design in Java | User Targeting, Percentage Rollout, Location Rules (LLD)
🔥 Learn how to design and implement a Feature Flag System in Java from scratch!
Feature Flags (also called Feature Toggles) are widely used in production systems to safely release features, run experiments, and control feature access.
In this video we implement a clean Low Level Design (LLD) of a Feature Flag system used in real backend systems.
✅ Global enable/disable
✅ User-targeted feature flags
✅ Percentage rollout for gradual releases
✅ Location-based feature control
👨💻 What you'll learn:
• Designing a Feature Flag system
• Writing clean and extensible Java code
• Handling feature rollouts in production systems
• Applying system design principles in backend engineering
🎯 This video is perfect for:
• Backend Engineers
• Java Developers
• System Design Interview Preparation
• Software Engineers learning LLD
👍 If you enjoyed the video, *Like, Subscribe, and hit the notification bell 🔔*
💬 Drop your questions in the comments — I reply to everyone!
#FeatureFlag
#Java
#SystemDesign
#LLD
#BackendEngineering