I had a memory issue with Django's bulk_update queryset method. The TLDR version is that bulk_update prepares all the update statements in advance (even when batch_size is set) which can use more memory than expected. Details and a solution in the blog:

Anže’s Blog

Django bulk_update memory issue

Recently, I had to write a Django migration to update hundreds of thousands of database objects.

I've improved the performance of the starter packs list query from about 200ms to 2ms. 🎉 The trick was to stop dynamically computing the number of accounts in a starter pack and instead precompute it in a column. A bit more work on each update, but worth it!

Yesterday, Python 3.14 was released, and today all of my Django side projects are running on 3.14. 🎉 The upgrade didn't require any code changes on my part, but I did see a few return statements in the finally block SyntaxWarnings in a few dependencies.

Over the weekend, I migrated one of my Django Apps from Gunicorn to Granian. TLDR: • The migration went smoothly. • There were no visible performance gains. • I still can't set a timeout for requests. I also wrote a blog post about this:

Anže’s Blog

Migrating Gunicorn to Granian

I migrated one of my Django apps from Gunicorn to Granian yesterday. Here is how the migration went and some of my thoughts on Granian and Gunicorn.

I'll be giving a talk about Free-threaded Python at the #01 - Python Lisbon Meetup next week (Oct 2)! 🎉 Hope to see you there!

Meetup

#01 - PyLM Meetup at Técnico 🎓🐍, Thu, Oct 2, 2025, 7:00 PM | Meetup

🚨 **The free Meetup plan limits us to 10 attendees, but we have room for more. Please join us on [Discord and RSVP there](https://discord.gg/5gZ...

The best TED Talk I've seen was about tying shoes. It's mind blowing that we are all taught the weaker form of the knot as kids and never learn that there is a stronger version.

How to tie your shoes

Terry Moore found out he'd been tying his shoes the wrong way his whole life. In the spirit of TED, he takes the stage to share a better way.

LLMs really are an amazing peace of technology. How were we ever able to live without them?

Early birthday present has arrived! 🎂