Introduction In Django, the ORM is your best friend when it comes to productivity, but it can quickly become your worst enemy for performance. The “default” way to query data is all(), which retur...

Introduction In Django, you’ll often see both pk and id in queries. Most of the time, they behave the same, so it’s easy to assume they are identical. But the moment you define a custom primary k...

Introduction When working with large datasets in Django, the ORM’s default caching behavior can quietly become a liability. QuerySet caching is convenient until you iterate over hundreds of thous...

Introduction Most Django tutorials start with something like: User.objects.all() It works, it’s clean, and it feels “Pythonic”. But if you keep that habit in real projects, you’ll eventually s...