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This article mainly introduces the use of Redis cluster, the article is very detailed, has a certain reference value, interested friends must read it!

Redis cluster is a distributed (distributed), fault-tolerant (fault-tolerant) Redis implementation, and the functions that can be used by clusters are a subset of the functions that can be used by ordinary stand-alone Redis (subset).

There are no central nodes or proxy nodes in the Redis cluster, and one of the main design goals of the cluster is to achieve linear scalability (linear scalability).

Redis clusters provide a way to run Redis, where data is automatically partitioned among multiple Redis nodes. The Redis cluster also provides a degree of availability during partitioning, that is, it can actually continue to run when some nodes fail or are unable to communicate. However, in the event of a major failure (for example, when most primary stations are unavailable), the cluster stops running.

Redis cluster model:

What goals does the Redis cluster achieve?

● still performs well at 1000 nodes and the scalability is linear. Asynchronous replication is used between clusters, and there is no merge operation.

● acceptable write security (Write safety) level: the system attempts to save all writes made by clients connected to most nodes. However, a small number of writes will be lost.

● availability (Availability): when the vast majority of master nodes (master node) are reachable, and each unreachable master node has at least one of its slave nodes (slave) reachable, the Redis cluster can still perform partitions operations.

The above is all the content of what is the use of Redis cluster, thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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