What are Redis Streams and how do they work?

What are Redis Streams and how do they work?

Redis Streams is a data structure that allows you to manage and process streams of data in a time-ordered manner. It supports features like message delivery guarantees and consumer groups.

Can you explain how to create a stream in Redis?

To create a stream in Redis, you can use the XADD command. For example, XADD mystream * key1 value1 key2 value2 will add a new entry to 'mystream'.

What are consumer groups in Redis Streams?

Consumer groups allow multiple consumers to read from the same stream without duplicating messages. Each message is delivered to only one consumer in the group.

How do I read messages from a stream?

You can read messages using the XREAD command. For example, XREAD COUNT 10 STREAM mystream $ will read the latest 10 messages from 'mystream'.

Are there any limitations to using Redis Streams?

Yes, Redis Streams have some limitations, such as memory usage and the maximum number of entries that can be stored, which can affect performance.