What limitations exist when using signals in Django?

In Django, signals allow reacting to certain events, such as model saving. However, there are some limitations when using them:

• Debugging complexity: signals are called asynchronously relative to the main code, which complicates tracking the execution flow.
• Implicit connections: the link between the event and the handler is implicit, which can make architecture understanding harder.
• Performance issues: if handlers contain a lot of logic, it can slow down operations like model saving.
• Call order: the order of signal handlers is not guaranteed, which can lead to unpredictable behavior.
• Potential cycles: improper use of signals can lead to recursive calls.

Therefore, it is recommended to use signals moderately and where it is truly justified.