added scheduler, logging and optimization updates

app.py

@@ -19,6 +19,7 @@ import json
 from apscheduler.schedulers.background import BackgroundScheduler
 from apscheduler.triggers.cron import CronTrigger
 import logging
+import pytz
 
 # Configure logging
 logging.basicConfig(level=logging.INFO, format='%(asctime)s - %(name)s - %(levelname)s - %(message)s')
@@ -229,7 +230,7 @@ async def health_check():
     return {"status": "success", "message": "Recommendation service operational"}
 
 # Scheduler setup
-scheduler = BackgroundScheduler()
+scheduler = BackgroundScheduler(timezone="America/Los_Angeles")
 scheduler.add_job(
     rebuild_model,
     trigger=CronTrigger(hour=3, minute=30),  # Run at 3:30 AM every day

requirements.txt

@@ -6,4 +6,6 @@ torch_geometric
 supabase
 fastapi
 python-dotenv
-uvicorn
+uvicorn
+apscheduler
+pytz