Redis Stream

Definitions

1. A log-based data structure in Redis (introduced in 5.0) that stores an append-only sequence of entries identified by time-based IDs, supporting consumer groups with acknowledgment semantics — essentially giving Redis durable, replayable messaging that Pub/Sub lacks.

   In plain English: A persistent message log in Redis that remembers everything and lets multiple readers track their own progress through the messages.

   Example: "We switched from Pub/Sub to Redis Streams so consumer groups could pick up where they left off after a restart."

Related Terms

• Consume
• Producer
• RDB
• Redis Cluster
• Redis Pipeline
• Redis Pub/Sub
• Sorted Set
• Task Queue