RUMSentry

RUMSentry is a web app (with a lightweight JavaScript snippet) that monitors real-user performance and pinpoints regressions tied to releases, routes, devices, and geographies. Instead of drowning teams in charts, it focuses on “what changed” and “who is impacted,” then produces a short, actionable incident brief: affected pages, top slow resources, long tasks, third‑party scripts, and a likely culprit commit window. It integrates with CI/CD to automatically compare baseline vs. current metrics (LCP, INP, CLS, TTFB) and flags statistically meaningful shifts. The product is intentionally narrow: fast setup, opinionated alerts, and clear next steps. It won’t replace enterprise APM suites; it aims to be the pragmatic middle ground for teams that need real-user visibility without paying for or operating a full observability platform.