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Cache persist MEMORY_ONLY mock in Python

Mock a MEMORY_ONLY persistence cache in Python with an LRU eviction policy and optional persistence flag.

import time

class LRUCache:
    def __init__(self, capacity, persistence="MEMORY_ONLY"):
        self.capacity = capacity
        self.persistence = persistence
        self.cache = {}
        self.access_order = []
        self.hits = 0
        self.misses = 0

    def get(self, key):
        if key in self.cache:
 …

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