Administering Mediator : Clustering and Load Balancing : Overview of Clustering and Load Balancing
Overview of Clustering and Load Balancing
Mediator supports clustering to achieve load balancing. In a load balanced system, calls from service consumers and events and metrics (messages) are distributed among two or more different instances of Mediator, referred to as nodes. Load balancing provides the following benefits:
*Scaling. Scaling is provided by distributing the processing of messages across two or more different nodes.
*Reliability. A cluster provides fault tolerance, which ensures that if a node goes down, run-time events and metrics can be recovered. For more information, see Role of the Shared Cache in Metrics and Event Notification.
Clustering relies on the clustering feature provided by Integration Server. Each node runs on a separate instance of Integration Server, and so you must configure clustering properly in Integration Server in order for Mediator's clustering feature to work properly. For more information, see the webMethods Integration Server Clustering Guide.
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