Django初始化 [英] Django Initialization

问题描述

我有一个大数组，当django启动时，我只想将其加载到内存中一次，然后将其视为只读全局变量.放置代码以初始化该数组的最佳位置是什么?

I have a big array, that I would like to load into memory only once when django starts up and then treat it as a read only global variable. What is the best place to put the code for the initialization of that array?

如果我将其放在settings.py中，则每次导入设置模块时都会重新初始化它，对吗?

If I put it in settings.py it will be reinitialized every time the settings module is imported, correct?

推荐答案

settings.py是正确的选择.像任何其他模块一样，Settings.py被加载一次.仍然存在一个问题，即每个进程必须一次导入一个模块，因此Web服务器的重生样式(如apache)将为每个相关实例重新加载一次.对于mod_python，每个进程一次.对于mod_wsgi，除非您必须重新启动，否则这可能只是一次.

settings.py is the right place for that. Settings.py is, like any other module, loaded once. There is still the problem of the fact that a module must be imported once for each process, so a respawning style of web server (like apache) will reload it once for each instance in question. For mod_python this will be once per process. for mod_wsgi, this is likely to be just one time, unless you have to restart.

tl; dr模块也将被导入一次.把它放到settings.py

tl;dr modules are imported once, even if multiple import statements are used. put it in settings.py

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