1. Event Driven Architectures with Apache Synapse Paul Fremantle VP, Apache Synapse Member, ASF CTO and Co-Founder, WSO2

4. Why use an Event Driven Architecture?

5. Empowerment

7. Two different kinds of SOA Consumers ESB Services Services Services Consumers Consumers System ESB System System System System System

9. Scenario – Financial Security blocking Database legacy flat file NEW YORK Existing System Synapse Poll Record->XML XML->XML Send LONDON Synapse Split/Iterate DBLookup/Filter Transform to MQ Send Existing System XML/JMS

10. Overall ESB flow FileSystemListener NY Sequence Log Out-Only Flatpack E4X Send to London LondonEndpoint LondonSequence Iterate DBReport – log whole msg Filter/Drop NOAC Send

11. PushMePullYou

12. PushMePullYou scenario

15. Loose coupled and Self Organizing

16. We know this!

17. Event based models

20. Advanced Web Services Core Axis © WSO2 Inc. 2006 WS-Eventing Event Source Subscribe with EPR of subscriber Respond with EPR of SubsMgr Subscriber Event Notifications (any message) SubsMgr getStatus renew unsubscribe

22. Eventing in Synapse Synapse Proxy Event Source Event Publisher Subs Mgr Subscriber Publisher Subscriber Subscriber subscribe Mediation Sequence

26. Case Study

29. Feedback!

30. Feedback problems Black Box change update

31. Feedback loops http://pzf.fremantle.org/2008/09/interesting-problem-in-event-driven.html Black Box system Black Box system Adapter Adapter Event Broker

32. EDA + MDR

38. Questions?