Real User Monitoring (RUM)

RUM measures the experience of your actual visitors. A small JavaScript SDK reports page loads, Core Web Vitals, errors, route changes and session activity from real browsers.

Install the SDK

Get your RUM ingest key from Settings → RUM.
Add the snippet to your site (before </head>):

<script src="https://cdn.verops.io/rum-sdk.js"></script>
<script>
  VerOpsRUM.init({
    apiKey: "YOUR_RUM_INGEST_KEY",
    service: "storefront",
    environment: "prod",
    sampleRate: 1.0,          // 1.0 = 100% of sessions
    trackErrors: true,
    trackWebVitals: true
  });
</script>

Single-page apps

The SDK auto-tracks route changes; you can also send custom events to mark business steps:

VerOpsRUM.track("checkout_completed", { value: 79.0, currency: "USD" });

What you get

Core Web Vitals — LCP, INP, CLS — sliced by page, device, country, release.
Page and session performance — load times, slow resources, route timings.
Error tracking — JS errors and failed requests, grouped, with the session.
Sessions and replays — reconstruct what the user did before a problem.
Funnels — conversion through multi-step flows and where users drop off.

Configuration reference

Option	Default	Purpose
`sampleRate`	1.0	Fraction of sessions to record (lower for high traffic).
`trackErrors`	true	Capture JS errors and unhandled rejections.
`trackWebVitals`	true	Collect LCP/INP/CLS.
`environment`	—	Separate prod vs staging data.

Synthetic plus RUM: synthetic catches regressions before launch from a controlled probe; RUM measures real impact after. Use both.