Overview
TicketSystem is an architecture concept designed for reservation workflows under high concurrency. The goal is not maximum request throughput, but stable and consistent behavior under load.
Problem
High demand leads to race conditions, database contention, and inconsistent booking states. Without proper load control, systems tend to overbook, degrade in performance, and become difficult to reason about.
Architecture Approach
Backpressure over Failures
Incoming requests are actively regulated to prevent system overload and maintain stable response behavior under peak conditions.
Deterministic Locking
Critical operations are protected through deterministic locking to avoid conflicting updates and duplicate reservations.
Sync / Async Separation
User-facing interactions remain lightweight, while heavy processing is decoupled and handled asynchronously.
Idempotent Requests
Repeated requests are safe to execute and do not produce inconsistent or duplicated results.
Key Features
Observability is built into the system, enabling detailed analysis of queue depth, latency, throughput, and system behavior under load.
Screenshots & Monitoring
Challenges
The main challenge was balancing throughput, consistency, and system stability. High-load systems must remain predictable and controllable, not just fast.
Learnings
Scalability is not achieved by maximizing parallelism, but by controlling load, ensuring deterministic behavior, and maintaining strong visibility into the system state.