Hanz - Hospitality Service

Hanz is a centralized hotel network management system, managing 2,000+ rooms with real-time sync. The system was scaled in 3 weeks.

Challenges: Controlling Overbooking risk with tens of thousands of concurrent requests during flash-sale events (10,000+ requests/min). Real-time Inventory Sync across global OTA (Online Travel Agencies) channels.

Solution: Event-driven Architecture with Message Brokers (Kafka) and Distributed Locks. Heavy logic offloaded to Background Workers with optimized Database Sharding/Replication, maintaining data integrity across massive parallel transaction sessions.

Key Features

Tech Stack