What is a Redis Cluster and how does it work?

What is a Redis Cluster and how does it work?

A Redis Cluster is a distributed implementation of Redis that allows data to be sharded across multiple nodes. It provides high availability and scalability.

How does data sharding work in a Redis Cluster?

Data sharding in a Redis Cluster is achieved by partitioning the keyspace into slots. Each node in the cluster is responsible for a subset of these slots.

What happens if a node fails in a Redis Cluster?

If a node fails, the cluster can automatically promote a replica to master, ensuring continued availability and minimal downtime.

Can I add or remove nodes from a Redis Cluster easily?

Yes, Redis Cluster allows you to add or remove nodes dynamically without downtime, making it flexible for scaling.

What are the benefits of using Redis Cluster over a single Redis instance?

Using Redis Cluster provides better scalability, fault tolerance, and higher availability compared to a single Redis instance.