Cache video CDN status

app.py

@@ -109,6 +109,8 @@ def download_and_upload_video(video_id, url, video_quality):
                     )
                     
                     logger.info(f"Successfully uploaded video {video_id} to CDN")
+                    if cache:
+                        cache.set(f"{video_id}_uploaded", True, expire=CACHE_EXPIRATION_SECONDS)
                     
                     # Clear cache for this video to ensure next view gets updated HTML
                     if cache:
@@ -160,6 +162,9 @@ worker_thread.start()
 
 def is_video_in_cdn(video_id):
     """Check if video exists in CDN"""
+    if cache and cache.get(f"{video_id}_uploaded"):
+        return True
+
     if not s3_client:
         return False