From 9c85ed6fb68868b672f0a1b9776df876591c2d87 Mon Sep 17 00:00:00 2001
From: Deep Koluguri <deepkoluguri@gmail.com>
Date: Sat, 23 May 2026 23:06:03 -0400
Subject: [PATCH] fix: disable all browser caching for html files in node.js
 backend to prevent clients from hanging onto completely stale application
 layouts

---
 backend/server.js | 19 ++++++++++++++++++-
 1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/backend/server.js b/backend/server.js
index 9e31f01..4d0a0c5 100644
--- a/backend/server.js
+++ b/backend/server.js
@@ -9,18 +9,35 @@ const port = 3000;
 
 app.use(express.json());
 // Serve static files
-app.use(express.static(path.join(__dirname, '../')));
+app.use(express.static(path.join(__dirname, '../'), {
+    setHeaders: (res, path) => {
+        if (path.endsWith('.html')) {
+            res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
+            res.setHeader('Pragma', 'no-cache');
+            res.setHeader('Expires', '0');
+        }
+    }
+}));
 
 // Primary Routes
 app.get('/', (req, res) => {
+    res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
+    res.setHeader('Pragma', 'no-cache');
+    res.setHeader('Expires', '0');
     res.sendFile(path.join(__dirname, '../login.html'));
 });
 
 app.get('/admin', (req, res) => {
+    res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
+    res.setHeader('Pragma', 'no-cache');
+    res.setHeader('Expires', '0');
     res.sendFile(path.join(__dirname, '../admin.html'));
 });
 
 app.get('/dashboard', (req, res) => {
+    res.setHeader('Cache-Control', 'no-store, no-cache, must-revalidate, proxy-revalidate');
+    res.setHeader('Pragma', 'no-cache');
+    res.setHeader('Expires', '0');
     res.sendFile(path.join(__dirname, '../dashboard.html'));
 });