Implementing Asynchronous Notifications to Heterogeneous External Interfaces

IT applications often have to deal with various external interfaces maintained by external teams or vendors. Any one of these EIs can become unavailable, and interface protocols can also vary greatly, from binary socket communication to Web service calls. A notification framework is required to achieve loose coupling between the main business flows and notifications to EIs, provide guaranteed delivery, and minimize synchronization issues among systems. This session compares WS-Notification, WS-Eventing, MQ topic, and enterprise service bus approaches. It also describes a sample custom-built solution based on the JMS layer, a broker, and a separate heterogeneous EI adapter module between application and external systems.

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