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For developers: Catch load balancing events

This article describes how to create an event handler that is called when Sitefinity CMS gets a load balancing cache invalidation message.

Perform the following:

  1. Open your project in Visual Studio.
  2. Create a class implementing the ISystemMessageHandler in the following way:

    The CanProcessSystemMessage() determines how the handler handle the message. For example, based on the message key. The ProcessSystemMessage() processes the message.

  3. In Sitefinity SMC backend, navigate to Administration » Settings » Advanced.
  4. In the left pane, expand System » LoadBalancing » Handlers.
  5. Click Create new and enter SitefinityWebApp.Custom.LBHandler
  6. Save your changes.

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Next: NLB: Configure Site Sync between two load balanced environments