Redis is an in-memory, networked key-value store. It behaves like a Python dictionary exposed as a service, making lookups fast and useful for caching, message brokering, and quick information retrieval. section 23.6
Python access commonly uses the redis-py client, installed with pip install redis. A running Redis server is required; a hosted instance, Docker, or a platform-specific installation can provide one. section 23.6
A small Redis session
After connecting with redis.Redis(host=..., port=..., password=...), inspect keys with r.keys(), save a value with r.set('a_key', 'my value'), and retrieve it with r.get('a_key'). The operation returns True on success, while retrieval produces b'my value'.
