signals

Signals and save overrides both handle model events, but have different use cases. I override save() for logic intrinsic to the model. Signals decouple logic across apps—I use them when multiple apps need to respond to model changes. Signals can make

Signals allow different parts of the application to respond to model events without tight coupling. I use post_save for actions after an object is created or updated, like sending notifications or updating related records. The @receiver decorator is c