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我试图优化我的Django后端性能。我有一个使用Django Simple History(https://django-simple-history.readthedocs.io/en/latest/)跟踪的模型用户。删除历史记录的Django批量更新
我希望能够批量更新我的用户模型,然后将其从历史记录中删除。对于单个用户,这看起来像这样:
u = User.objects.get(id=user_id)
u.name = "new name"
u.save()
u.history.first().delete() # I don't want to track this change.
性能方面,哪个更好?
选项1:
users = User.objects.filter(needs_updating=True)
for user in users:
user.name = "New name"
user.save()
user.history.first().delete()
选项2:
User.objects.filter(needs_updating=True).update(name="new name")
User.history.filter(name="new name").delete()