How to Prevent Duplicate Booking | System Design FAANG Interview | Redis Distributed Locks Explained

Описание: 🚀 Learn how to prevent duplicate booking in system design interviews — one of the most asked questions at top tech companies like Tesco, Amazon, Google, and Meta.

This video covers the COMPLETE solution senior engineers need to know:
✅ Why duplicate booking happens (concurrency problem explained)
✅ Database unique constraints (your safety net)
✅ Redis distributed locking with NX and EX flags (production-grade solution)
✅ Row-level locking with SELECT FOR UPDATE
✅ The best real-world approach (combined Redis + DB strategy)
✅ Word-for-word interview answer that impresses hiring managers

🎯 Perfect for:
Senior Software Engineer interviews
Backend Engineer technical rounds
System Design interview preparation
Anyone building booking systems, ticket platforms, or reservation apps

🔑 KEY CONCEPTS COVERED:
#SystemDesign #Redis #DistributedLocking #Concurrency #DatabaseDesign #InterviewPrep

💬 QUESTIONS FOR YOU:
What company are you interviewing with? Drop it in the comments and I'll cover their favorite system design questions next!

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📖 Resources mentioned:
Redis Documentation: https://redis.io/docs/

#SystemDesignInterview #SoftwareEngineering #TechInterviews #Redis #BackendDevelopment #CodingInterview #SeniorEngineer #Tesco #FAANG #DistributedSystems #Concurrency #DatabaseDesign #TechCareer #InterviewTips #softwaredeveloper