Using Load Balancing

Load balancing enables a Java Connection Factory to distribute server load between a cluster of redundant servers. For more information about load balancing, see Load Balancing Overview in the SAS Integration Technologies: Server Administrator's Guide.

Note:   Load balancing can only be used with SAS Stored Process Servers and SAS Workspace Servers.

A connection factory that is configured for load balancing uses a group of redundant servers called a load-balancing cluster to send connection requests to the server that has the least load. If a server in the load-balancing cluster is unavailable, connection requests are sent to other servers instead.

The following code fragment configures a connection factory to use load balancing:

String classID = Server.CLSID_SAS;
Server server0 = new BridgeServer(classID,"foo0.bar.abc.com",1234);
Server server1 = new BridgeServer(classID,"foo1.bar.abc.com",1234);
Server[] servers = {server0,server1};
Cluster cluster = new LoadBalancingCluster(servers);
ConnectionFactoryConfiguration cxfConfig = 
   new ManualConnectionFactoryConfiguration(cluster); 

Note:   Load-balancing clusters require additional configuration on the server side. For details, see Planning and Configuring a Load-Balancing Cluster in the SAS Integration Technologies: Server Administrator's Guide.