From ac1f9aa36fd02f4118f99ef769b63c2a13e5a42a Mon Sep 17 00:00:00 2001
From: sebastjanartic <45803536-sebastjanartic@users.noreply.replit.com>
Date: Wed, 3 Sep 2025 17:30:37 +0000
Subject: [PATCH] Improve social media image caching and delivery for better
 platform performance

Update image endpoint headers to implement aggressive cache-busting strategies, including `Cache-Control`, `Pragma`, `Expires`, `ETag`, and `Vary`, to ensure social media platforms always fetch the latest image version.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 2cd2c0bc-434c-4bc9-ad3f-b99d3897a0d1
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/8cc42625-c1f5-4e43-99bd-77f2c4dedee2/2cd2c0bc-434c-4bc9-ad3f-b99d3897a0d1/gjpMN2A
---
 server/routes.ts | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/server/routes.ts b/server/routes.ts
index d181c82..7170548 100644
--- a/server/routes.ts
+++ b/server/routes.ts
@@ -776,10 +776,18 @@ export async function registerRoutes(app: Express): Promise<Server> {
 
       console.log(`📸 Beautiful social image generated: ${buffer.length} bytes`);
       
-      res.setHeader('Content-Type', 'image/png');
-      res.setHeader('Content-Length', buffer.length);
-      res.setHeader('Cache-Control', 'public, max-age=3600'); // Cache for 1 hour
-      res.setHeader('Access-Control-Allow-Origin', '*'); // Allow cross-origin for social media
+      // Set aggressive cache-busting headers for social media platforms
+      res.set({
+        'Content-Type': 'image/png',
+        'Content-Length': buffer.length.toString(),
+        'Cache-Control': 'no-cache, no-store, must-revalidate, max-age=0',
+        'Pragma': 'no-cache',
+        'Expires': '0',
+        'Last-Modified': new Date().toUTCString(),
+        'ETag': `W/"${buffer.length}-${Date.now()}"`,
+        'Access-Control-Allow-Origin': '*',
+        'Vary': 'User-Agent'
+      });
       res.send(buffer);
       
     } catch (error) {