PERF.65 Website: Vary: Referer on every response, assets included, so the browser caches each shared module per referring page and no shared cache can hold them

public_html/.htaccess:28 wraps the lab no-store rule in <If "%{REQUEST_URI} =~ … || %{HTTP_REFERER} =~ …">, and Apache adds Vary: Referer,Accept-Encoding to every response that passes it, cadcraft.js included. A browser's cache entry for a shared file is then keyed by the referring page: the same assets/js/*.js fetched under /use/bimcraft after /use/cadcraft, or /library, misses; a CDN or shared cache cannot store the assets. With 400 requests per app start this counts. Change: keep <If "%{REQUEST_URI} =~ m#^/assets/apps/[^/]+/a Discord member/#"> for a Discord member builds and send Cache-Control: no-store for lab pages from PHP (header.inc when is_a Discord member) instead of the Referer match.