Durable Subscribers in 12c by Sivakumar

Business Events are used to notify the interested parties (subscribers) about an occurrence of activity which is of important to them. On raising the business events, the subscribers would consume them and process it based on their business flows. All these things would happen in a highly loose coupled manner and business events producers may not be aware of the subscribers. So when designing an application based on business events one of the aspects requires attention is, Will there be any loss of event?

This is very important as subscribers are not in a position to request providers to raise event again, even if they do its going to be a duplicate event (occurrence) for other subscribers. Technically speaking, the loss of event can be translated into any of these following scenarios:

  • Subscriber received the business event but faulted during processing.
  • Subscriber is unavailable when the business event is published.
  • The hosted server itself is down when the business event is published.

Read the complete article here.

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About Jürgen Kress
As a middleware expert Jürgen works at Oracle EMEA Alliances and Channels, responsible for Oracle’s EMEA Fusion Middleware partner business. He is the founder of the Oracle SOA & BPM and the WebLogic Partner Communities and the global Oracle Partner Advisory Councils. With more than 5000 members from all over the world the Middleware Partner Community is the most successful and active community at Oracle. Jürgen manages the community with monthly newsletters, webcasts and conferences. He hosts his annual Fusion Middleware Partner Community Forums and the Fusion Middleware Summer Camps, where more than 200 partners get product updates, roadmap insights and hands-on trainings. Supplemented by many web 2.0 tools like twitter, discussion forums, online communities, blogs and wikis. For the SOA & Cloud Symposium by Thomas Erl, Jürgen is a member of the steering board. He is also a frequent speaker at conferences like the SOA & BPM Integration Days, JAX, UKOUG, OUGN, or OOP.

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