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Improve frontend performance and caching behavior

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Codex
2026-03-08 00:06:50 +00:00
parent de10c47a8c
commit adb164c8e1
5 changed files with 69 additions and 71 deletions
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25
hdyc-svelte/src/hooks.server.ts
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@@ -14,7 +14,25 @@ const MIME_TYPES: Record<string, string> = {
};
const HTML_CACHE_CONTROL = 'public, max-age=0, must-revalidate';
const IMMUTABLE_ASSET_CACHE_CONTROL = 'public, max-age=31536000, immutable';
const ASSET_404_CACHE_CONTROL = 'no-store';
const LONG_CACHE_EXTENSIONS = new Set([
'.js',
'.mjs',
'.css',
'.json',
'.svg',
'.png',
'.jpg',
'.jpeg',
'.webp',
'.avif',
'.ico',
'.woff2',
'.woff',
'.ttf',
'.otf'
]);
export const handle: Handle = async ({ event, resolve }) => {
const response = await resolve(event);
@@ -36,11 +54,18 @@ export const handle: Handle = async ({ event, resolve }) => {
// keep pointing to already-rotated files long after a deployment.
if (response.status >= 400) {
response.headers.set('cache-control', ASSET_404_CACHE_CONTROL);
} else if (pathname.startsWith('/_app/immutable/')) {
response.headers.set('cache-control', IMMUTABLE_ASSET_CACHE_CONTROL);
}
return response;
}
const extension = path.extname(pathname).toLowerCase();
if (LONG_CACHE_EXTENSIONS.has(extension) && !contentType.includes('text/html')) {
response.headers.set('cache-control', IMMUTABLE_ASSET_CACHE_CONTROL);
}
// HTML documents should revalidate so they can reference the latest client
// bundle hashes after each deployment.
if (contentType.includes('text/html')) {