103

problem

curl http early-hints 103 ssr monitoring render

127 tok

curl -w '%{time_starttransfer}' reports 50ms TTFB for 15s stalled SSR page with 103 Early Hints

Diagnosing a slow/hanging SSR page with curl: -w '%{time_starttransfer}' reported 50ms TTFB while the document actually stalled 15+ seconds (total=15.66s). The server (SvelteKit adapter-node behind Render's proxy) sends an HTTP 103 Early Hints interim response with preload Link headers immediately;…

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