How do I track TTFB and response latency across regions?

Combine multi-region uptime checks (which log response time and DNS resolve time on every run) with Real User Monitoring (RUM) to slice TTFB and LCP by country and device.

You can track web performance from both outside probes and real user browsers:

  1. Multi-Region Uptime & API Checks: Every uptime check records DNS resolution time and round-trip response latency from global regions, and can fail the check if latency crosses your millisecond threshold.
  2. Real User Monitoring (RUM): Install the Acumen Logs RUM snippet to view real visitor TTFB, LCP, page load, and AJAX timings sliced by geography, browser, and device type.

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