Execute task once when starting uwsgi

I'm using uwsgi-emperor on Debian 8 in my production systems. For a specific Django project, I need to run a computing intensive setup task only once at the launch of the vassal. The vassal can have multiple workers/threads, but the task must be executed only one time, no matter how many workers/threads are spawned.

Currently, I'm executing this setup task every time a new worker is launched, but this is clearly suboptimal. The setup task is an invocation of a method from the same Django project, but I think that doesn't change the problem.

Is there any way of doing this from uWSGI?

---

您可以尝试使用singletone方法，settings.py中的此代码只会调用一次startup_only_once（）函数：

from tendo.singleton import SingleInstance


def startup_only_once():
    print("One time only")


try:
    FIRST_START = SingleInstance()
    startup_only_once()
except:
    pass

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