From cf86ea59528d478ac281bbca0e6cff81879286c3 Mon Sep 17 00:00:00 2001
From: Konstantin Wohlwend <n2d4xc@gmail.com>
Date: Thu, 5 Feb 2026 11:30:39 -0800
Subject: [PATCH] Proxy caching

---
 apps/backend/src/proxy.tsx | 1 +
 1 file changed, 1 insertion(+)

diff --git a/apps/backend/src/proxy.tsx b/apps/backend/src/proxy.tsx
index a413d2952..858ec1b9f 100644
--- a/apps/backend/src/proxy.tsx
+++ b/apps/backend/src/proxy.tsx
@@ -74,6 +74,7 @@ export async function proxy(request: NextRequest) {
     "Access-Control-Max-Age": "86400",  // 1 day (capped to lower values, eg. 10min, by some browsers)
     "Access-Control-Allow-Headers": corsAllowedRequestHeaders.join(', '),
     "Access-Control-Expose-Headers": corsAllowedResponseHeaders.join(', '),
+    "Vary": corsAllowedRequestHeaders.join(', '),
   } : undefined;
 
   // ensure our clients can handle 429 responses