Redis Streams#

Redis Streams are a data structure introduced in Redis 5.0 that offer a reliable and highly scalable way to handle streams of data. They are similar to logging systems like Apache Kafka, where data is stored in a log structure and can be consumed by multiple clients. Streams provide a sequence of ordered messages, and they are designed to handle a high volume of data by allowing partitioning and multiple consumers.

A Redis Stream is a collection of entries, each having an ID (which includes a timestamp) and a set of key-value pairs representing the message data. Clients can add to a stream by generating a new entry and can read from a stream to consume its messages.

Streams have unique features such as:

• Persistence: Data in the stream are persisted and can be replayed by new consumers.
• Consumer Groups: Allow concurrent consumption and acknowledgment of data entries by multiple consumers, facilitating partitioned processing.
• Range Queries: Clients can query streams for data within a specific range of IDs.