Re: best practices for location of start up code

On Sat, Sep 23, 2017 at 2:39 PM, Larry Martell <larry.martell@gmail.com> wrote:
> On Sat, Sep 23, 2017 at 1:34 PM, James Schneider
> <jrschneider83@gmail.com> wrote:
>>
>>
>> On Sep 22, 2017 2:58 PM, "Larry Martell" <larry.martell@gmail.com> wrote:
>>
>> We have some code we want to run 1 time when our django app is
>> started. What is the best place for this? I tried putting it in my
>> app's config function, but from there I get:
>>
>> *** AppRegistryNotReady: Apps aren't loaded yet.
>>
>>
>> Once as in only when the app is initially deployed, or once every time the
>> web server process is started?
>>
>> Note that if you place code to run every time the web process is started,
>> that it will run for every process, and most web servers spawn multiple
>> processes.
>
> I'm looking to run it once when the web server is started (not each
> time another process of the web server is started)

I am using nginx and uwsgi. I tried experimenting with Antonis
Christofides suggestion of using AppConfig.ready(). That seems to get
called just once when I start (or restart uwsgi). I tried many
connections to the server from different browsers and computers, but
still that was only called once. Is that something I can count on?

Note, when running the devel django server it was called twice at
start up, but when the 'real' server it was only called once. Anyone
know why I got the 2 calls here?

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