CODE EXAMPLE FOR PYTHON

python functools

import functools
import time

@functools.lru_cache(maxsize=256)
def find_user(name):
    # imitating slow search
    time.sleep(1)
    user = {"id": 11, "name": "Diane"}
    return user

find_user("Diane")
# kinda slow

find_user("Diane")
# blazingly fast