Eventor: Concurrent Event Scheduling System
A full-stack event RSVP coordinator featuring robust concurrency guards. Leverages atomic MongoDB transactions to completely prevent event overbooking under high-load concurrent queries.
Case Study Deep Dive
Project Overview & Objectives
Eventor is a high-concurrency event reservation and ticketing system engineered for high-demand concerts, tech conferences, and university festivals.
The Engineering Challenge
When high-profile events release tickets, thousands of concurrent users attempt to reserve the same finite inventory simultaneously, frequently resulting in race conditions, overselling, and database deadlocks.
Architecture & Technical Decisions
Built with React.js, Node.js, and MongoDB utilizing atomic transactions with two-phase commit locks. Implemented optimistic concurrency controls at the database layer and distributed rate limiting to throttle burst traffic while preserving fair queue positioning.
Solution & Delivered Impact
Successfully achieved zero overbooking across high-stress simulated loads of 10,000+ concurrent requests. Maintained sub-20ms API response latencies while guaranteeing cryptographic verification of issued digital entry passes.
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