Cloud–based processing of events with Cloud-based response.
|Problem||How do I use Cloud resources to process incoming events, sense a need to respond, and then respond?|
|Context||This pattern is applicable when there is a desire to leverage Cloud computing to process high volume events and respond to the events with Cloud-based systems.While it is possible to have a point-to-point connection to a single Cloud-based application (SaaS or an application deployed to PaaS or IaaS) for response, sending the event to a PaaS platform provides a more flexible response capability.|
|Solution||This pattern employs an Stream Processing Platform only in the Cloud. The Stream Processing Platform receives incoming events and then filters, aggregates, correlates and enhances the events to determine when a response is required. If a response is required, a message is sent to SaaS, PaaS, or application running on IaaS.|
Events from event generators processed in the Cloud with response in the Cloud.
- Cloud-based event generators send events to the streaming processing platform.
- On-premises event generators send events to the streaming processing platform
- The streaming processing platform filters, correlates, aggregates, and enhances the events and creates outgoing events which are sent are sent to SaaS, PaaS, or an application running on IaaS to be handled.
- The outbound event from the
streaming processing platform could be sent directly to a Cloud-based application (SaaS or an application hosted on PaaS or IaaS), however, sending the event to a PaaS platform allows for a more flexible event response.