Oliver Kieselbach 7680bdff7b fix(web): disable RSC prefetch on nav links - portal freeze root cause ...

Navbar + GlobalSidebar render the full navigation on every page, so the
App Router's default viewport prefetch fired one ?_rsc= request per
visible link against the SWA runtime (~10.4k requests / 14 days). That
origin serves document, chunks and RSC payloads over HTTP/1.1 (6
connections per origin); when the runtime queued the prefetches (p95
896ms, tail up to 234s), they held every socket and the portal froze
until the queue drained. Measured on the 2026-07-27 17:25 incident:
/admin/presence?_rsc= at 151s while the backend API answered in <2.2s.

All 16 nav links now set prefetch={false}. Every target route is a
client component behind ProtectedRoute that fetches its own data after
mount, so the prefetched RSC payload carried no benefit.

New OKF doc docs/web/portal-navigation-prefetch.md records the full
evidence chain and where browser telemetry lives (separate App Insights
resource, not reachable via MCP query_backend_logs).

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

2026-07-27 18:27:24 +02:00

..

portal-navigation-prefetch.md

fix(web): disable RSC prefetch on nav links - portal freeze root cause

2026-07-27 18:27:24 +02:00