Identity verification and permission control: Decorators can be used to verify user identity and control their access permissions, for example, the @login_required decorator can ensure that only logged-in users can access a certain view function.
Cache: You can use decorators to add caching functionality, for example, the @cache_page decorator can cache the output of view functions to improve access speed.
Logging: You can use decorators to log information, for example, the @log_request decorator can record relevant information about requests, which can be used for troubleshooting and monitoring the system’s status.
Performance optimization: Decorators can be used to optimize performance, for example, the @transaction_atomic decorator can ensure that database operations are carried out within a single transaction, preventing data inconsistency.
Timing statistics: decorators can be used to measure the execution time of functions, helpful for performance analysis and optimization.
Input validation: Decorators can be used to verify the validity of user input data, for example the @validate_input decorator can ensure that the data entered by the user adheres to specified formatting rules.
Error handling: Decorators can be used to handle exceptions during the execution of functions. For example, the @handle_error decorator can catch exceptions and return user-friendly error messages.
Rate limiting: Decorators can be used to restrict the frequency of user requests, for example, the @ratelimit decorator can set limitations on user access frequency.