Ausfallsicherer Signal-Handler mit Ausnahmeisolierung und Protokollierung

import logging
from django.db.models.signals import post_save
from django.dispatch import receiver
from django.contrib.auth.models import User
 
logger = logging.getLogger(__name__)
 
@receiver(post_save, sender=User)
def initialize_user_profile(sender, instance, created, **kwargs):
    if not created:
        return
    try:
        # Imagine an external service call or database creation
        logger.info(f"Triggered profile creation sequence for user ID: {instance.pk}")
    except Exception as exc:
        logger.error(f"Failed user initialization signal handler for ID {instance.pk}: {exc}", exc_info=True)