Encyclopedia of Database Systems

2018 Edition
| Editors: Ling Liu, M. Tamer Özsu

Event Channel

  • Opher Etzion
Reference work entry
DOI: https://doi.org/10.1007/978-1-4614-8265-9_588

Synonyms

Event connection; Event pathway; Event topic

Definition

An event channel is a routing node in the event processing network that receives events from event sources and event processing agents, and route them to event sinks and event processing agents.

Key Points

An event channel [ 2] is the main routing vehicle in the event processing network; it is being used to enable loosely coupled architecture, in which the event producer and event consumer does not have any dependency among them [ 1]. An event channel receives an event (in push or pull) from an event source or from an event processing agent, and makes routing decisions. The routing decision may be of several types:
  1. 1.

    Itinerary based routing: the consumers are explicitly specified within the event content.

     
  2. 2.

    Subscription based routing: using a “callback” protocol, the consumer subscribes to events on the channel.

     
  3. 3.

    Intelligent routing: a decision process is activated to decide on the event consumers.

     
  4. 4.

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Recommended Reading

  1. 1.
    Crowcroft J. Channel islands in a reflective ocean: large scale event distribution in heterogeneous networks. In: Proceedings of 2nd International IFIP-TC6 Networking Conference; 2002. p. 1–9.CrossRefGoogle Scholar
  2. 2.
    Luckham D, Schutle R, editors. EPTS event processing glossary version 1.1. http://complexevents.com/?p = 409
  3. 3.
    Sharon G, Etzion O. Event processing network: model and implementation. IBM Syst J. 2008;47(2):321–34.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  1. 1.IBM Software GroupIBM Haifa Labs, Haifa University CampusHaifaIsrael

Section editors and affiliations

  • Opher Etzion
    • 1
  1. 1.IBM Software GroupIBM Haifa LabsHaifaIsrael