Manager nodes
To implement a Spotfire Statistics Services cluster, you configure Manager nodes and Worker nodes.
A Spotfire Statistics Services Manager node is dedicated to handling all incoming requests. You must have at least one Manager node per cluster, and it must be installed on a separate computer from worker nodes. After you establish the first Manager node, you can add one or more Worker nodes at any time, because the cluster uses a centralized storage location for the configuration store.
A dedicated Spotfire Statistics Services Manager node that handles all incoming requests introduces a single point of failure. We recommend, for failover purposes, that you configure an additional Manager node. However, when you have more than one Manager node in your cluster, you must also install a load balancer. A load balancer can ensure failover and distribute incoming requests between two Manager nodes. The nodes share the responsibilities of queuing jobs and forwarding results back to the load balancer. The load balancer sends the results to clients.
