ARCHITECTURE
LAB

Real-world system design problems with hard constraints. No textbook answers — just trade-offs, mistakes, and the thinking that connects them.

1 experiment so far.

FoundationProductionScaleStaff

Designing a Real-Time Cinema Seat Booking System

How to handle 8,000 concurrent users fighting over 300 seats — with WebSocket sync, Redis holds, and Postgres as the final lock.