What is TTFB by US state
TTFB by US state breaks down Time to First Byte (TTFB) based on the geographic location of the user. TTFB reflects backend and network latency—it’s the time the browser waits before the server sends the first byte of data.
This lens is especially helpful for identifying geographic backend slowdowns or CDN coverage issues.
Only states with backend timing data from the selected period are included.
Healthy TTFB by US state sample
Should you worry
Ideally, all high-traffic US states should show green TTFB values, indicating fast server response and CDN edge proximity across the country.
Unhealthy TTFB by US state sample
Slow TTFB in a state often means:
Your server or CDN is physically far from the user
DNS or TLS negotiation delays
Backend bottlenecks or routing misconfigurations
Inconsistent CDN caching or failover behavior
Resolving unhealthy TTFB by US state
Go-to action plan to resolve an unhealthy TTFB by US state:
Ask Uxi to analyze your TTFB by US state values and suggest improvements.
Use Filters to find out if the issue is device-specific or route-based.
Simulate TTFB of the suspected lens to see if fixing it will resolve the TTFB by US state. If yes, this is where the resolution focus should be.
Use an automated optimization tool like Navigation AI to improve your TTFB by US state values.
Once you’ve improved TTFB, set an alert to be the first to know if it starts worsening again.
Try it yourself
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