Re: Welcome email

2020-10-26 Thread Jure Erznožnik
I think this thread was abandoned, but wrongfully so. Frequency of unrelated posts is increasing lately. Are there any serious issues with the moderation queue Google provides? Reminder: https://support.google.com/groups/answer/2466386?hl=en LP, Jure On Saturday, 25 July 2020 at 00:58:26 UTC+

Re: Instance Based Management?

2020-10-26 Thread Jure Erznožnik
Hi Matthew, I think you found the wrong mailing list for this question. Might I suggest you try django-us...@googlegroups.com? The question seems better suited there. That said, I don't know why you wouldn't want to use foreign keys in this scenario, but Django does support a thing called co

Re: Instance Based Management?

2020-10-26 Thread Daryl
What you are describing sounds like denormalisation, but the first step would be to ensure that the indexes on the child tables are being created. The query time to find rows if the lookup field is indexed is close to linear, without an index it will be close to exponential. You should only denorm

Instance Based Management?

2020-10-26 Thread Matthew Amstutz
Hello, I was wondering about instance based management. If I'm wrong, please tell me. When we have users and user generated content in a large database, query times are increased significantly. Why is there no instance based manager (like the models.Manager()) that basically generates a table

Re: Pass existing model Instance to update_or_create callables

2020-10-26 Thread Adam Johnson
I think the scenario you're suggesting is just a little too complex for update_or_create. It doesn't actually fetch the updated model instance . You can instead write out what you want without too much extra code using get_or_create, ensuring there's a transaction and select_for_update() to lock th

Re: Improved labels for M2M relations

2020-10-26 Thread Adam Johnson
Hi Julian It should be noted that you can improve the display today by creating explicit through models. However this is more longwinded. This change does look like a neat usability improvement to me. It can also help with debugging as the label appears in the default str/repr. My main question i

Pass existing model Instance to update_or_create callables

2020-10-26 Thread James Pulec
Since update_or_create supports callables in the defaults dictionary, I'm wondering if it's worth considering passing the existing instance (if one is found) to those callables when resolving them. The scenario I'm running into involves wanting to merge json data. Basically, I have a JSON field

Improved labels for M2M relations

2020-10-26 Thread Julian Klotz
Hey there, here’s a little topic that impacts the usability of Django admin’s delete views. When deleting an object using django admin, you get a nice summary of all deleted objects. I really like the overview, but the labels used to describe m2m relations that will be deleted aren't user-fri

Re: DB persistent connection

2020-10-26 Thread Florian Apolloner
Hi, I am not sure what you are trying to tell us?! Opening a connection to Postgresql is somewhat time-consuming and 10ms in a cloud env does not seem to be surprising at all. Cheers, Florian On Monday, October 26, 2020 at 2:28:28 PM UTC+1 pra...@fampay.in wrote: > https://groups.google.com/g

DB persistent connection

2020-10-26 Thread 'Pratik Gajjar' via Django developers (Contributions to Django itself)
https://groups.google.com/g/django-developers/c/rH0QQP7tI6w/m/yBusiFTNBR4J We are running django with gunicorn + gevent. We have set Max con age to 10 min. We use newrelic for monitoring. Even though we have set it to use persistent connection it;s showing in new relic that On average it takes