PERF_TTFB_001● MediumPerformance
The server is slow to respond
By Leakly · Published · Updated
01The problem
Time to first byte is high enough to delay everything that follows it.
Server latency is a floor under every other performance improvement. Nothing on the page can render before it is paid.
02How Leakly detects it
A structural fact counted in the rendered page, or a measurement against a threshold. Confidence ceiling for this detector family: 96%.
03Proof required
- A measured number, with its unit and the threshold it crosses.
Without it, the finding is not reported.
04How to fix it
Shorten the server's response time.
- Cache the page or its slowest query at the edge.
- Profile the request path: the delay is usually one call, not the whole stack.
Each audit that finds this leak includes the exact element, a suggested change and, for copy, a rewrite you can paste.