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Caching & Redis

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

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Caching & Redis medium

How to Cache Data in Redis with Python

Build a simple Redis cache wrapper that stores and retrieves JSON data with automatic TTL and serialization.

redis cache json
Python 
import redis
import json
import time


class Cache:
    def __init__(self, host="localhost", port=6379, db=0, default_ttl=60):
        self.client = redis.Redis(host=host, port=port, db=db)
        self.default_ttl = default_ttl

    def get(self, key):
        value = self.client.get(key)
        if value is None:
  …
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