How to configure Neo4J Fabric Cluster?

Neo4j Graph Platform Operations
1

  1. I want to shard data with multiple database, I have found that we can shard the data using Neo4j Fabric. Since Fabric is not actual database and its just the proxy, What should be good configuration for the Fabric DB?

  2. How many connections can be established parallelly using Fabric? In my use case I would have around 20K request / Second.