Load Balancing

Load balancing can be applied to both client connections and EIS connections, to improve performance and enable efficient utilization of resources in the Unwired Server cluster.

There are two load-balancing mechanisms you can use with the Unwired Server cluster:

Relay Server — a Sybase software product, acts as a reverse proxy server for client devices communicating with Unwired Server
Load balancer appliance — a third-party product, such as a layer 4 network switch, can be used for both client and EIS connections

Note: Relay Server cannot be used on EIS connections.

Client Load Balancing
Client load balancing improves capacity and performance of the Unwired Server cluster, when servicing mobile client requests.
Client Load Balancing with BES
You can apply load balancing to connections between BlackBerry Enterprise Server (BES) and Unwired Servers in a cluster.
EIS Load Balancing
EIS load balancing improves the capacity and performance of the Unwired Server cluster, when it services data change notification (DCN) or DOE Connector requests from the back-end Enterprise Information System (EIS).

Parent topic: System Design