Python Django 和并行进程

问：

我正在 Django 中制作延迟消息传递服务。我到达了任务管理器。 从理论上讲，它应该与 Django 并行启动，它的任务是“读取数据库”并发送消息。 我使用了“multiprocessing Pool”，代码被输入到 manage.py 中。

让我感到困惑的是，启动时，其中一个进程会触发两次，在屏幕截图中为“ok”。 使用并行过程，站点已组装并正常工作。

为什么？有没有更好的做法？

结果：

не ok
не ok
Performing system checks...

Watching for file changes with StatReloader
System check identified no issues (0 silenced).
November 10, 2023 - 16:55:45
Django version 4.2.6, using settings 'WhiteRabbit.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.

ok
2023-11-10 16:56:44.743514
ok
2023-11-10 16:56:45.275028

manage.py:

import os
import sys
from multiprocessing import Pool
from automation.task_messanger import task_messanger

def main():
    """Run administrative tasks."""
    os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'WhiteRabbit.settings')
    try:
        from django.core.management import execute_from_command_line
    except ImportError as exc:
        raise ImportError(
            "Couldn't import Django. Are you sure it's installed and "
            "available on your PYTHONPATH environment variable? Did you "
            "forget to activate a virtual environment?"
        ) from exc
    execute_from_command_line(sys.argv)

if __name__ == '__main__':
    with Pool(processes=2) as pool:
        pool.apply_async(task_messanger, )
        pool.apply_async(main(), )
    # main()

我尝试了不同的泳池选项。