BookATicket - High-Concurrency Ticketing Engine
Scalable event ticketing, digital box office & real-time gate scanner platform.
Client / PartnerEvent Promoters, Festival Organizers, Sports Arenas & Theatres
Production PhaseLive / Deployed
Primary Toolchain
TypeScriptNode.jsPrisma
The Challenge
Organizers suffer substantial revenue leakage and chaotic admission delays caused by third-party ticketing platform downtime during peak flash ticket sales, ticket scalping, and fraudulent duplicated QR passes at entry gates.
Architecture & Solution
Built a distributed ticketing engine with optimistic seat concurrency reservation locks, tamper-resistant encrypted QR ticket generation, instant payment gateway webhook processing, and offline-capable mobile gate scanners with millisecond verification.
Key Features & Deliverables
High-concurrency inventory reservation with temporary cart holds to prevent double-booking
Dynamic tiered pricing (VIP, Early Bird, General Admission, Group Passes)
Cryptographically signed PDF & Apple/Google Wallet digital tickets with dynamic QR tokens
Field gate scanner app with sub-200ms validation and offline synchronization
Organizer box office console with live ingress pacing and revenue telemetry
Technology Stack
Backend: TypeScript & Node.js on high-performance Express with Prisma ORM
Queue & Concurrency: Redis atomic lock keys preventing double ticket sales
Payment Webhooks: Idempotent event processing with automated fallback reconciliation
Results & Project Metrics
10,000+ req/sec
Peak Booking Concurrency
< 200ms / ticket
Gate Scan Speed
100% Zero Duplicates
Fraud Pass Rejection
Need a similar solution engineered?
Consult with our engineering team to design, build, and deploy your custom system.