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Caching & Redis

Cache-aside, TTL, invalidation, hot keys, and in-memory lookup patterns at scale.

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How to Mock zlib Compression for Cache Values in Python

Compress cache values with zlib and mock the compress function in unit tests to simulate cache behavior.

zlib mock caching
Python 
import zlib
from unittest.mock import patch

def compress_value(data: bytes) -> bytes:
    """Compress data using zlib and return the compressed bytes."""
    return zlib.compress(data)

def decompress_value(compressed: bytes) -> bytes:
    """Decompress zlib data and return the original bytes."""
    return zlib.deco…
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