From 672e4baec483c86507ac827e87b87f9c4a4acb20 Mon Sep 17 00:00:00 2001
From: = <akhilmhdh@gmail.com>
Date: Tue, 13 May 2025 21:02:01 +0530
Subject: [PATCH] feat: added new cache control for index html

---
 backend/src/server/plugins/serve-ui.ts | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/backend/src/server/plugins/serve-ui.ts b/backend/src/server/plugins/serve-ui.ts
index 9f91d9774..22c097726 100644
--- a/backend/src/server/plugins/serve-ui.ts
+++ b/backend/src/server/plugins/serve-ui.ts
@@ -57,7 +57,9 @@ export const registerServeUI = async (
           reply.callNotFound();
           return;
         }
-        return reply.sendFile("index.html");
+        // reference: https://github.com/fastify/fastify-static?tab=readme-ov-file#managing-cache-control-headers
+        // to avoid ui bundle skew on new deployment
+        return reply.sendFile("index.html", { maxAge: 0, immutable: false });
       }
     });
   }