Stop browsers from caching index.html files

Author: brionmario

backend/cmd/server/main.go

@@ -306,6 +306,9 @@ func createStaticFileHandler(routePrefix, directory string, logger *log.Logger)
 		// Get the file path
 		filePath := path.Join(directory, r.URL.Path)
 
+		// Check if the requested file is index.html or if we need to serve it as fallback
+		isIndexHTML := r.URL.Path == "/" || r.URL.Path == "/index.html" || strings.HasSuffix(filePath, "index.html")
+
 		// Check if file exists
 		if _, err := os.Stat(filePath); os.IsNotExist(err) {
 			// For SPA routing, serve index.html for non-existent files
@@ -314,11 +317,22 @@ func createStaticFileHandler(routePrefix, directory string, logger *log.Logger)
 				logger.Debug("Serving index.html for SPA routing",
 					log.String("requested_path", r.URL.Path),
 					log.String("route_prefix", routePrefix))
+				// Set no-cache headers for index.html
+				w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+				w.Header().Set("Pragma", "no-cache")
+				w.Header().Set("Expires", "0")
 				http.ServeFile(w, r, indexPath)
 				return
 			}
 		}
 
+		// Set no-cache headers for index.html when served directly
+		if isIndexHTML {
+			w.Header().Set("Cache-Control", "no-cache, no-store, must-revalidate")
+			w.Header().Set("Pragma", "no-cache")
+			w.Header().Set("Expires", "0")
+		}
+
 		// Serve the requested file or directory listing
 		fileServer.ServeHTTP(w, r)
 	}))

frontend/apps/thunder-develop/index.html

@@ -5,6 +5,11 @@
     <link rel="icon" type="image/x-icon" href="/assets/images/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
+    <!-- Prevent browser caching -->
+    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
+    <meta http-equiv="Pragma" content="no-cache" />
+    <meta http-equiv="Expires" content="0" />
+
     <!-- Start of loading application configurations -->
     <script type="text/javascript" src="/config.js"></script>
     <!-- End of loading application configurations -->

frontend/apps/thunder-gate/index.html

@@ -4,6 +4,12 @@
     <meta charset="UTF-8" />
     <link rel="icon" type="image/x-icon" href="/assets/images/favicon.ico" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+
+    <!-- Prevent browser caching -->
+    <meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate" />
+    <meta http-equiv="Pragma" content="no-cache" />
+    <meta http-equiv="Expires" content="0" />
+
     <title>Gate</title>
 
     <!-- Start of loading application configurations -->