Developer Builds Scalable Broken Link Scanner Using Laravel and Go

A software developer has built a production-grade broken link scanner designed to handle large websites, using Laravel as the application control plane and Go as the concurrent scanning engine. The system addresses real-world crawling challenges such as duplicate URLs, redirects, rate limits, and malformed HTML that simple scripts cannot manage. Go workers independently lease scan jobs from Laravel via an API, process them concurrently, and report results in batches, allowing additional scanner servers to be added without modifying the web application. The crawler normalizes discovered URLs to prevent duplicate requests and separates internal page traversal from external link checking to avoid unbounded crawling. Concurrency is managed at multiple levels, including per-worker scan limits, worker pools, global HTTP request caps, and per-host rate controls to avoid overwhelming target servers.