How real-time data is received and broadcast using stream services. The illustration below compares how featureĭata has traditionally been received, processed, and consumed with ByĬonfiguring the GeoEvent Extension output to broadcastĮvent data via a stream service you will have the option ofĪrchiving or persisting event data in an enterprise data store, butĭoing so is not a requirement for data visualization. Clients are able toįilter stream service data by specifying either spatial orĬonnecting to a stream service to receive a real-time data feedĪllows you to separate the basic need of immediate event visualization from the need to persist data in a database. Reestablish their connection to the service. Specify the data they want to receive without having to unsubscribe and Stream services leverage WebSocket technology, which supportsįull-duplex, bidirectional communication. See What is the ArcGIS GeoEvent Extension for Server for more information. Releases will support a wider variety of client subscriptions.
In the initial release, stream service content can be incorporated into ArcGIS Online web maps as well as exposed through clients developed using the ArcGIS API Licensed and installed in your enterprise GIS in order to leverage stream services. Clients connecting to a stream serviceīegin receiving data immediately upon subscribing to the service.Ĭlients can specify and reconfigure both spatial and attributeĬonstraints without first unsubscribing and then reconnecting toĪrcGIS GeoEvent Extension for Server must be That emphasizes low latency, real-time data dissemination, forĬlient-server data flows. Esri'sĪnswer is a new type of ArcGIS for Server service-a stream service.Ī stream service is a new type of ArcGIS for Server service Parallel as event data is pushed in real-time to clients. Persistence needs to be addressed as an archival task undertaken in Traditionally, latency introduced by first storing thisĮvent data in a feature class in an enterprise geodatabase so thatĬlients can periodically poll a feature service to retrieve theĭata for display is proving to be problematic-especially when Increases, it is becoming more important that your applications areĪble to consume and immediately display this event data. Stream Services in the ArcGIS REST Services DirectoryĪs the number of data sources providing real-time data streams.Back to Top Stream Services In this topic
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