Bangladesh Railway e-Ticket & Rail Sheba
National rail ticketing single page application handling millions of daily searches and peak-load seat reservations.
Successfully served 10M+ passengers monthly with 99.9% booking uptime during nationwide peak travel festivals.
Problem Statement
The legacy system struggled under catastrophic traffic spikes (millions of concurrent hits during Eid festivals), leading to race conditions in seat allocations and user lockouts.
Architectural Approach
Architected and converted the platform into a reactive Angular PWA with state-driven seat locking via WebSockets, intelligent retry mechanisms, offline ticket caching, and localized language support.
Core Technologies & Ecosystem Tools
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