<![CDATA[The actual cost of a 300ms API response time — measured]]>On a landing page with 3 API calls before first meaningful paint: 300ms per call = 900ms total blocking time. Reducing to 80ms: 240ms blocking time. Conversion rate difference at that latency boundary: approximately 12% based on our A/B test data. Performance is a product feature with measurable business impact.

]]>https://spveforpit.com/topic/691/the-actual-cost-of-a-300ms-api-response-time-measuredRSS for NodeSun, 26 Apr 2026 13:25:16 GMTThu, 23 Apr 2026 23:43:23 GMT60<![CDATA[Reply to The actual cost of a 300ms API response time — measured on Thu, 23 Apr 2026 23:43:23 GMT]]>On a landing page with 3 API calls before first meaningful paint: 300ms per call = 900ms total blocking time. Reducing to 80ms: 240ms blocking time. Conversion rate difference at that latency boundary: approximately 12% based on our A/B test data. Performance is a product feature with measurable business impact.

]]>https://spveforpit.com/post/1570https://spveforpit.com/post/1570Thu, 23 Apr 2026 23:43:23 GMT