The Event Service allows MashZone NextGen to connect to the Event Bus for Software AG and subscribe to events published by other Software AG applications.

The Event Bus handles events published by event producers which may be a variety of Software AG applications. It routes events as they are published to event consumers, such as MashZone NextGen, who have subscribed to specific event types.

MashZone NextGen also uses the Event Service to connect to Apama and to subscribe to and work with events from scenarios (also sometimes called dataviews). Apama scenarios have event data that has been specifically transformed for use in dashboards.

For MashZone NextGen, each Event Bus or Apama subscription feeds an event source which is managed by the Event Service. Event sources receive events for subscriptions, store them in memory and act as the data source for the corresponding EDA, DES, or Apama event.

From MashZone NextGen 10.2 on, Event Service provides high-availability mode and horizontal scalability. It can be run in a cluster to achieve both tolerance against failure of cluster members and horizontal scalability by distributing requests from MashZone NextGen to all cluster members.

Cluster members may be restarted (for example, after a fault or maintenance reboot) and automatically re-join the cluster and restore their state from disk. See MashZone NextGen dashboards in a clustered scenario > MashZone NextGen Event Service and Command Central plug-in for details concerning cluster configuration.

To use events as information sources, you must create EDA, DES, or Apama event sources. Unlike other sources, only MashZone NextGen administrators can create EDA, DES and Apama event sources for other users to work with.

To create these sources, administrators must create event sources as needed. MashZone NextGen retrieves event data from these event sources when users run the corresponding EDA, DES or Apama event source. If views for the event source are real-time views, events are pushed to the view automatically.

You can also Manage Apama Event Sources, Manage DES Event Sources, and Manage EDA Event Sources.