Update app.py

app.py

@@ -9,6 +9,8 @@ import pandas as pd
 from datetime import datetime
 from typing import Dict, Any, List, Optional
 import threading
+import urllib.request
+import time
 
 # ----------------------------------------------------------------------
 # Memory monitoring (no external dependencies)
@@ -48,6 +50,24 @@ def log_memory_usage():
     # Schedule next check in 60 seconds
     threading.Timer(60, log_memory_usage).start()
 
+# ----------------------------------------------------------------------
+# Keep‑alive to prevent idle timeout (runs every 10 minutes)
+# ----------------------------------------------------------------------
+def keep_alive():
+    """Periodically ping the app to avoid idle timeout."""
+    url = "http://127.0.0.1:7860/"
+    while True:
+        time.sleep(600)   # 10 minutes
+        try:
+            with urllib.request.urlopen(url, timeout=5) as response:
+                status = response.getcode()
+                logging.info(f"Keep‑alive ping: {status}")
+        except Exception as e:
+            logging.warning(f"Keep‑alive failed: {e}")
+
+# Start keep‑alive thread (daemon so it exits when main process ends)
+threading.Thread(target=keep_alive, daemon=True).start()
+
 # ----------------------------------------------------------------------
 # Plotly for dashboards
 # ----------------------------------------------------------------------