From 43a9c26497e16335a98838b80150077791e04fc6 Mon Sep 17 00:00:00 2001
From: Nils Pukropp <nils@narl.io>
Date: Thu, 14 May 2026 18:12:58 +0200
Subject: [PATCH] backend opti

---
 frontend/src/pages/api/[...path].ts   | 11 ++++-------
 frontend/src/pages/index.astro        |  5 +++++
 frontend/src/pages/posts/[slug].astro | 18 ++++++++++++++++--
 3 files changed, 25 insertions(+), 9 deletions(-)

diff --git a/frontend/src/pages/api/[...path].ts b/frontend/src/pages/api/[...path].ts
index b07a76f..7576c56 100644
--- a/frontend/src/pages/api/[...path].ts
+++ b/frontend/src/pages/api/[...path].ts
@@ -29,13 +29,10 @@ export const ALL: APIRoute = async ({ request, params }) => {
       headers,
     };
 
-    if (request.method !== 'GET' && request.method !== 'HEAD') {
-      const reqClone = request.clone();
-      if (request.method !== 'DELETE' || reqClone.body) {
-        fetchOptions.body = reqClone.body;
-        // @ts-ignore — required by Node fetch when body is a stream
-        fetchOptions.duplex = 'half';
-      }
+    if (request.method !== 'GET' && request.method !== 'HEAD' && request.body) {
+      fetchOptions.body = request.body;
+      // @ts-ignore — required by Node fetch when body is a stream
+      fetchOptions.duplex = 'half';
     }
 
     const response = await fetch(url.toString(), fetchOptions);
diff --git a/frontend/src/pages/index.astro b/frontend/src/pages/index.astro
index 0991fef..38873ce 100644
--- a/frontend/src/pages/index.astro
+++ b/frontend/src/pages/index.astro
@@ -58,6 +58,11 @@ const isAdmin = Astro.cookies.get('admin_session')?.value === '1';
 ---
 
 <Layout title="Catalogue" description={siteConfig.welcome_subtitle}>
+	{posts[0]?.cover_image?.url && (
+		<Fragment slot="head">
+			<link rel="preload" as="image" href={posts[0].cover_image.url} fetchpriority="high" />
+		</Fragment>
+	)}
 	<section class="relative mb-16 md:mb-24">
 		<div class="max-w-2xl">
 				<h1 class="font-display italic font-semibold text-[var(--text)] text-5xl md:text-7xl lg:text-8xl leading-[0.95] tracking-tight mb-6">
diff --git a/frontend/src/pages/posts/[slug].astro b/frontend/src/pages/posts/[slug].astro
index f5f0551..5395211 100644
--- a/frontend/src/pages/posts/[slug].astro
+++ b/frontend/src/pages/posts/[slug].astro
@@ -71,6 +71,11 @@ const displayTitle = post ? (post.title || formatSlug(post.slug)) : 'Work';
     image={post?.cover_image?.url}
     type="article"
 >
+  {post?.cover_image?.url && (
+    <Fragment slot="head">
+      <link rel="preload" as="image" href={post.cover_image.url} fetchpriority="high" />
+    </Fragment>
+  )}
   <div id="reading-progress" class="reading-progress" aria-hidden="true"></div>
 
   {error && (
@@ -192,9 +197,18 @@ const displayTitle = post ? (post.title || formatSlug(post.slug)) : 'Work';
         const pct = Math.max(0, Math.min(1, (window.scrollY - startY) / distance));
         bar.style.transform = 'scaleX(' + pct + ')';
       }
+      let pending = false;
+      function schedule() {
+        if (pending) return;
+        pending = true;
+        requestAnimationFrame(function () {
+          pending = false;
+          update();
+        });
+      }
       update();
-      window.addEventListener('scroll', update, { passive: true });
-      window.addEventListener('resize', update);
+      window.addEventListener('scroll', schedule, { passive: true });
+      window.addEventListener('resize', schedule);
     })();
   </script>
 </Layout>