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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 Redis Streams Consumer Groups in Python

Simulate Redis Streams producer and consumer group behavior in Python using a standalone mock class for testing and development.

redis streams mock
Python 
import time
import json
from collections import defaultdict

class RedisStreamMock:
    def __init__(self):
        self.streams = defaultdict(list)
        self.consumer_groups = defaultdict(dict)
        self.pending_entries = defaultdict(list)

    def xadd(self, stream, fields):
        entry_id = f"{time.time_ns(…
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