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Configuring NameServers : Configuring fault tolerance and load balancing : Location transparency

Location transparency

When a Unified Broker instance is started, it registers with its controlling NameServer the application services that it supports. (An application service is an arbitrary designation for the business function that a Unified Broker instance provides.) The NameServer maintains a separate list of application services for each Unified Broker type. When a client of a certain type requests a connection to an application service, the NameServer redirects the connection request to a Unified Broker instance of the corresponding type that supports the requested application service. Because the client always connects indirectly to a Unified Broker through the NameServer, the client does not need to know the location of the Unified Broker instance. It needs to know only the location of the NameServer and the name of a valid application service that it wants.