How I Eliminated Race Conditions in a High-Concurrency Ticketing API (opens in new tab)

Executive Summary: To eliminate race conditions in a high-concurrency ticketing system, I implemented PostgreSQL's FOR UPDATE clause for row-level database locking alongside Go worker channels for in-memory queue serialization. This approach completely prevents inventory over-selling by guaranteeing singular data mutation execution even under flash-sale load. If you have ever built an application that handles live event ticketing, flash sales, or limited-inventory drops, you know the dread of...