@cache # Noncompliant
def cached_function():
...Python doesn’t have TTL on cache with default libraries.
With functools library @cache acts the same way than @lru_cache(maxsize=None). @lru_cache(maxsize=None) create an unlimited cache and must be a source of memory leak, an unlimited cache can take a lot of RAM / Disk space, resulting to a big energy consumption.
By default, lru_cache set the size of cache to 128 entries.
In this case, the cache is unlimited which is suspect.
@cache # Noncompliant
def cached_function():
... @lru_cache(maxsize=None) # Noncompliant
def cached_function():
... @lru_cache() # By default, the max size of the cache is 128
def cached_function():
... @lru_cache(maxsize=16) # Define a max size to the cache
def cached_function():
...