Neo4j Casual Clustering benfits over High-Availability Clustering

Question

We are in the process of migrating HA cluster to Causal Clustering.

Is there any real advantage of migrating from HA Clustering to Causal Clustering?

Answer 1

Causal cluster is the new generation of Neo4j cluster, and it will continue to evolve with new releases.

There are many advantages for CC comparing to HA :

• no branch data (thanks to raft and consensus commit)
• more stability
• smart driver with bolt protocol (with LB and read your own write functionnality)
• cluster communication encryption
• ...

You need at minima 3 core nodes to create a cluster (2n+1 in fact where n is the number of failure you want to support).

I really recommend you to use the bolt protocol instead of the REST API, because official drivers only use bolt, and they can hide to you the complexity of a cluster.