How TypeTrain Uses Statvisor to Monitor Performance in Real Time

Why We Need Analytics That Go Beyond Page Views

Building a typing speed trainer like TypeTrain means real-time performance matters — every keystroke, every API call, every millisecond of latency is part of the user experience. That's why we rely on Statvisor to keep an eye on things when we can't be watching.

What Is Statvisor?

Statvisor is a full-stack analytics platform built specifically for JavaScript developers. In a single integration, it gives you visibility into both your backend API performance and your frontend Web Vitals without needing to configure any infrastructure. The tagline says it best: "Know what's breaking before your users do."

What We Monitor With It

On the backend, Statvisor automatically instruments our API routes and tracks:

• Latency percentiles (P50, P95, P99)

• Error rates and status code breakdowns

• Request volume over time

On the frontend, it tracks Web Vitals, page views, and visitor geography - so we know not just that something is slow, but where and for whom.

Dead Simple to Set Up

What sold us was the setup time. Statvisor drops into any Express, Fastify, NestJS, Hono, Next.js, or Cloudflare Workers project with a single line of code. No dashboards to configure, no infrastructure to spin up. It was running in under two minutes.