Update app.py

app.py

@@ -214,6 +214,26 @@ def get_cache_stats() -> str:
             "error": str(e)
         }, indent=2)
 
+def get_backend_health() -> str:
+    """
+    Get backend health status for monitoring
+    """
+    try:
+        return json.dumps({
+            "success": True,
+            "status": "healthy",
+            "cache_size": len(prompt_cache) + len(response_cache),
+            "users_tracked": len(token_ledger),
+            "total_requests": sum(u["requests"] for u in token_ledger.values()),
+            "timestamp": time.time()
+        }, indent=2)
+        
+    except Exception as e:
+        return json.dumps({
+            "success": False,
+            "error": str(e)
+        }, indent=2)
+
 # ============================================================================
 # GRADIO INTERFACE
 # ============================================================================
@@ -292,6 +312,13 @@ with gr.Blocks(title="ZeroEngine-Backend", theme=gr.themes.Monochrome()) as demo
         stats_output = gr.Code(label="Statistics (JSON)", language="json")
         
         stats_btn.click(get_cache_stats, None, [stats_output])
+    
+    with gr.Tab("🏥 Health"):
+        gr.Markdown("### Backend Health Status")
+        health_btn = gr.Button("Check Health", variant="primary")
+        health_output = gr.Code(label="Health Status (JSON)", language="json")
+        
+        health_btn.click(get_backend_health, None, [health_output])
 
 if __name__ == "__main__":
     demo.launch(server_name="0.0.0.0", server_port=7860, ssr_mode=False)