How a Simple Linter Rule Prevented a Million Dollar Outage

Episode 18 of The Software Engineering Podcast with Fexingo dives into the surprising power of a single linter rule. Lucas and Luna examine how a seemingly trivial ESLint configuration — no floating promises — caught a critical bug in a major e-commerce platform's checkout flow. They walk through the actual incident: how an unhandled promise rejection silently swallowed a payment confirmation call, leading to a cascading system failure that locked thousands of orders in a pending state. The conversation covers the technical details, the detective work that traced the root cause to a missing await keyword, and the broader lesson about static analysis as a safety net for distributed systems. They also explore why many engineering teams overlook linter rules as mere style enforcement, and how a culture of proactive tooling can prevent production fires. A must-listen for developers who want to turn their linter from a nag into a guardian. #LinterRules #ESLint #FloatingPromises #StaticAnalysis #JavaScript #NodeJS #AsyncAwait #PromiseRejection #CheckoutFlow #Ecommerce #ProductionIncident #RootCauseAnalysis #SoftwareEngineering #CodeQuality #DistributedSystems #Technology #FexingoBusiness #BusinessPodcast Keep every episode free: buymeacoffee.com/fexingo