Exemplo de cache usando deque. Fonte: Canal Eduardo Mendes - Live de Python #28 Deque e Namedtuple / Collections #1

cache_usando_deque.py

from collections import deque

cache_values = deque(maxlen=3)


def cache(func):
    def inner(*args):
        cache_values.append(args)        
        return func(*args)
    return inner


@cache
def soma(x, y):
    return x + y