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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 easy

Redis Cache Helper Class in Python with TTL

Build a DataHelper class that caches function results in Redis with a default TTL, using get_or_set and clear methods.

redis caching cache-aside
Python 
import redis
import json
import time


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

    def get_or_set(self, key, data_func, ttl=None):
        c…
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