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Django Pitfalls
Every Django Engineer Should Know These 10 Backend Killers
Real production lessons from Django engineers who’ve been burned. Learn from them.
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Why This List Exists
Most Django apps don’t blow up because of one massive bug. They rot quietly.
The ORM does too much. Caching is guessed. Background jobs? Nah, just throw it all in the view. And when it all crumbles in prod, it’s always “but it worked on localhost.”
I’ve built, shipped, and debugged Django backends in startups and teams under real deadlines. This list is for devs who don’t want to find out what’s broken at 2AM—when users are already tweeting that your app’s down.
These are the backend killers that come for every Django project eventually. Unless you kill them first.
1. N+1 Query Hell
The Trap:
You loop over a queryset in a template or view, and inside that loop… another query fires. Then another. Then 300 more. You don’t notice it during dev because you’re…
