Logging: Decorators can be used to record the input parameters and output results of a function, or to record information such as the execution time of a function, making it easier to debug and analyze the program.
Authorization check: Decorators can be used to verify users’ permissions, such as checking if a user is logged in or has specific roles, in order to restrict access to certain functions or interfaces.
Performance optimization: Decorators can be used to cache the results of a function, preventing redundant calculations and improving the program’s performance.
Error handling: Decorators can be used to capture exceptions during the execution of a function and handle or log error information.
Log monitoring: Decorators can be used to monitor the execution of functions, such as recording metrics like the number of times a function is called, execution time, etc., to help analyze performance bottlenecks in the program.
Transaction Management: Decorators can be used to manage database transactions, ensuring that transactions are rolled back in a timely manner if an exception occurs during function execution.
Caching data: decorators can be used to cache the return values of functions, avoiding redundant calculations.