Syntax:

a_class_name

[Default: none]

It specifies which class should be used to handle the failover. This is called to recover a desktop, when ZK cannot locate the desktop. The class must have a default constructor (without any argument), and implement the

org.zkoss.zk.ui.sys.FailoverManager

interface.

In most cases, you don’t need to provide any implementation. Rather, you can let Web servers to handle failover and clustering for you by specifying the org.zkoss.zk.ui.http.SerializableUiFactory class in the ui-factory-class element as described above.