What are Redis Streams?

Welcome! In this lesson, we'll dive into Redis Streams, a powerful data structure for managing real-time event data.

Think of a stream as an append-only log of messages, similar to a traditional message queue or a Kafka topic, but built right into Redis.

Streams are ideal for building event-driven architectures, processing sensor data, or tracking user activity.

Redis already has Pub/Sub, so why Streams?

• Persistence: Stream messages are stored and not lost if consumers are offline. Pub/Sub messages are fire-and-forget.
• Consumer Groups: Streams support consumer groups for cooperative message processing, allowing multiple applications to read the same stream without duplicating work.
• Message History: You can read messages from any point in the stream's history.

Streams offer durability and advanced consumption patterns that Pub/Sub doesn't.