Hi Bobby,

I'm not sure this is what you are looking for but it looks like 
`connection_created`[1] signal might do.

Cheers,
Simon

[1] https://docs.djangoproject.com/en/1.9/ref/signals/#connection-created

Le mercredi 3 février 2016 12:25:36 UTC-5, Bobby Mozumder a écrit :
>
> I'm looking to use PREPARE/EXECUTE statements, to eliminate my Query 
> Planning time from every Web request.
>
> This can be done via SQL PREPARE/EXECUTE statements.
>
> But, Postgres only supports PREPARE statements on a connection 
> session-by-session basis.  
>
> To do this with Django, I need to be able to run an SQL Query that runs 
> the PREPARE statement for every connection to the Database. I only need to 
> do this once per DB connection, as I have enabled Persistent connections.  
>
> The code to run, if I put it into the App.view, would be something like 
> this:
>
> class PreparedView(View):
>     def prepare_db():
>         cursor = connection.cursor()
>         cursor.execute(“”"
> PREPARE prepared_query (int, text, etc) AS
>   SELECT … some query … 
> “”"
>         return cursor.close()
>
> I’m looking through the Django code to see where I can run some sort of 
> Query.  Maybe I can subclass 
> django.db.backends.postgresql.base.DatabaseWrapper.init_db_connection_state()?
>
> Also, where can I hook that into my app?  If I subclass that, I’m not sure 
> if I can/should put that in the Model, View, or URL of modules of my app, 
> so that it’s called?  Do I create an entirely new version of 
> django.db.backends.postgresql?
>
> Ideally this would work with both the basic built-in development server 
> connecting to a local host Postgres, as well as in a uWSGI environment with 
> possible pgBouncer in the stack somewhere.
>
> Thanks!
>
> -bobby
>

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