If your checkout endpoint serves 10,000 requests per minute, a 5% latency spike means 500 users are...
If your checkout endpoint serves 10,000 requests per minute, a 5% latency spike means 500 users are having a bad experience every minute.
Averages compress that pain into a single comfortable number.
P95 latency — the latency at the 95th percentile — tells you what your slowest users are actually experiencing.
It's the metric that catches the spike average hides.
This is why I track P95 as the primary health signal, not averages.
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The Cloudflare Blog: Pingora
