added scheduler, logging and optimization updates

app.py

@@ -19,6 +19,7 @@ from apscheduler.schedulers.background import BackgroundScheduler
 from apscheduler.triggers.cron import CronTrigger
 import logging
 import uvicorn
+import pytz
 
 # Configure logging
 logging.basicConfig(level=logging.INFO)
@@ -244,8 +245,7 @@ async def get_recommendations_handler(user_id: str = Query(...)):
 async def health_check():
     return {"status": "success", "message": "Service operational"}
 
-scheduler = BackgroundScheduler(timezone="PST")
-
+scheduler = BackgroundScheduler(timezone="America/Los_Angeles")
 scheduler.add_job(
     rebuild_model,
     trigger=CronTrigger(hour=3, minute=30),

requirements.txt

@@ -7,4 +7,5 @@ supabase
 fastapi
 python-dotenv
 uvicorn
-apscheduler
+apscheduler
+pytz