A mission-critical medical festival portal and high-concurrency event registration platform engineered for AIIMS Delhi. Designed to handle intense traffic spikes during South Asia's largest medical campus festival, processing registrations, pass issuances, and accommodation bookings with zero downtime.

During peak festival enrollment, thousands of medical attendees from across India flooded the system simultaneously. Legacy architectures suffered from database connection exhaustion, race conditions during high-demand event bookings, and dropped payment webhooks under heavy concurrency.
Engineered an edge-first Next.js architecture with PostgreSQL connection pooling via PgBouncer and optimistic UI locks. Integrated Razorpay serverless webhook listeners with cryptographic signature verification and automated reconciliation queues. Deployed across AWS CloudFront edge distributions for sub-20ms schedule and campus map delivery.
Implemented Redis-backed distributed mutex locks for ticket allocations to guarantee zero double-booking under extreme concurrency. Isolated write-heavy payment records from read-heavy festival schedules using micro-cached API edge routes, ensuring fluid browsing even during flash ticket drops.
Maintained 99.8% uptime throughout the 15-day festival cycle, processing over ₹1,50,000 in secure transactions and handling 12,000+ attendee interactions with sub-180ms response times without a single dropped payment or database deadlock.
Distributed Redis locks eliminate inventory race conditions during flash ticket drops.
Verifies payment signatures with automated asynchronous reconciliation queues.
AWS CloudFront edge manifests deliver schedules and venue maps in under 20ms.
Automated medical student credential and AIIMS institutional affiliate verification.

