What is Redis data replication and how does it work?

What is Redis data replication and how does it work?

Redis data replication is a process that allows data from one Redis server (the master) to be copied to one or more Redis servers (the replicas). This ensures data redundancy and improves data availability.

Why would I want to use data replication in Redis?

Data replication in Redis provides several benefits, including increased data availability, improved read performance by distributing read requests across replicas, and enhanced fault tolerance.

How do I set up replication in Redis?

To set up replication, you need to configure the replica servers to point to the master server by setting the 'replicaof' directive in the Redis configuration file.

Can I have multiple replicas for a single master?

Yes, Redis allows you to have multiple replicas for a single master, which can help balance the load and provide higher availability.

What happens if the master goes down?

If the master goes down, the replicas can be promoted to masters, and you can reconfigure the system to ensure continued availability.