modified: app.py

deleted:    static/default_profile.png

app.py

@@ -114,12 +114,6 @@ def fetch_and_cache_profile_picture(user_id, avatar_url):
     
     local_image_path = os.path.join(PROFILE_IMAGE_DIR, f"{user_id}.png")
     
-    # Prüfen, ob das Bild bereits lokal gespeichert ist
-    if os.path.exists(local_image_path):
-        print(f"Profile picture for user {user_id} already exists locally.")
-        r.set(str(user_id), local_image_path)
-        return local_image_path
-
     try:
         # Bild von der URL herunterladen und speichern
         response = requests.get(avatar_url, timeout=10)
@@ -137,12 +131,23 @@ def fetch_and_cache_profile_picture(user_id, avatar_url):
         print(f"Error fetching profile picture for user {user_id}: {e}")
         return "/static/default_profile.png"
 
-
 def get_profile_picture(user_id, avatar_url):
-    """Gibt den Pfad zum Profilbild eines Benutzers zurück, entweder aus Redis oder durch Abruf."""
+    """Versucht, das Profilbild eines Benutzers aus Redis, lokalem Speicher und zuletzt durch Download zu holen."""
+    # 1. Versuch: Redis
     cached_image = r.get(str(user_id))
     if cached_image:
-        return cached_image.decode('utf-8')  # Rückgabe des Pfads aus Redis
+        print(f"Redis cache hit for user {user_id}: {cached_image}")
+        return cached_image.decode('utf-8')
+    
+    # 2. Versuch: Lokaler Speicher
+    local_image_path = os.path.join(PROFILE_IMAGE_DIR, f"{user_id}.png")
+    if os.path.exists(local_image_path):
+        print(f"Local cache hit for user {user_id}")
+        r.set(str(user_id), local_image_path)  # Cache das Bild in Redis
+        return local_image_path
+
+    # 3. Download und Cache des Bilds
+    print(f"Downloading profile picture for user {user_id}")
     return fetch_and_cache_profile_picture(user_id, avatar_url)
 
 @app.context_processor