Caching decorator

simple_cache.py

import functools, logging, inspect

def cached(key:str, timeout_sec: int = 5 * 60):
    """
    key - cache_key_{param1_name}_{param2_name}

    timeout_sec - timeout in seconds
    """
    def inner_function(function):
        @functools.wraps(function)
        def wrapper_cache_func(*args, **kwargs):
            bound_args = inspect.signature(function).bind(*args, **kwargs)
            bound_args.apply_defaults()
            generated_key = key.format(**bound_args.arguments)
            try:
                result = cache.get_by_key(generated_key)
                if result is None:
                    logger.warning(f'Not in cache {function.__name__}{args[:1]} ')
                    result = function(*args, **kwargs)
                    cache.set_by_key(generated_key, result, timeout=timeout_sec)
                return result
            except Exception as e:
                logger.exception(f'Exception in cached {function.__name__}{args[:1]} ')
                raise e
        return wrapper_cache_func
    return inner_function