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How to implement a write-behind cache with async queue in Python

Build an async write-behind cache that queues writes in memory and flushes them in batches to persistent storage.

import asyncio
from collections import deque
from dataclasses import dataclass

@dataclass
class CacheEntry:
    key: str
    value: str

class WriteBehindCache:
    def __init__(self, flush_interval=1.0):
        self.cache = {}
        self.queue = deque()
        self.flush_interval = flush_interval
        self._f…

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