Dan Toomey on Building Event-Driven Integration Architectures
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Dan Toomey presented on building event-driven integration architectures using Azure services. He discussed key event concepts like event types and event sourcing versus event notification. Event Grid was highlighted as a serverless solution for handling events and reacting to state changes across Azure resources and external webhooks. Toomey advocated for an event-driven design approach to build cost-effective and responsive cloud applications, and recommended choosing the appropriate Azure messaging service like Event Grid, Event Hubs or Service Bus based on your specific needs.
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Dan Toomey on Building Event-Driven Integration Architectures
- 1. Dan Toomey Integration Architect / Microsoft MVP Building Event-Driven Integration Architectures
- 2. Who am I? • Senior Integration Specialist, Deloitte • Microsoft Azure MVP • MCSE, MCT, MCPD, MCTS BizTalk & Azure • Pluralsight Author • www.mindovermessaging.com • @daniel2me
- 3. What is an Event? http://www.news.com.au
- 4. Types of Events https://www.biztalk360.com/integrate-2018-resources/eventing-serverless-and-the-extensible-enterprise/ Discrete Independent Report state change Actionable Series Time based Context partitioned Report condition Analyzable
- 5. Types of Events https://www.biztalk360.com/integrate-2018-resources/eventing-serverless-and-the-extensible-enterprise/ Discrete Independent Report state change Actionable Series Time based Context partitioned Report condition Analyzable
- 6. Event Driven vs. Event Sourcing https://martinfowler.com/articles/201701-event-driven.html Event Notification Broadcast state changes No expectation from consumer Decoupled logic Event Sourcing Persist state changes Auditability Replay capability
- 7. Event Driven vs. Event Sourcing https://martinfowler.com/articles/201701-event-driven.html Event Notification Broadcast state changes No expectation from consumer Decoupled logic Event Sourcing Persist state changes Auditability Replay capability
- 12. https://cloudevents.io/ Serverless Working Group https://github.com/cloudevents/spec CNCF CloudEvents
- 13. CNCF CloudEvents { "specversion" : "1.0", "type" : "com.github.pull.create", "source" : "https://github.com/cloudevents/spec/pull", "subject" : "123", "id" : "A234-1234-1234", "time" : "2018-04-05T17:31:00Z", "comexampleextension1" : "value", "comexampleothervalue" : 5, "datacontenttype" : "text/xml", "data" : "<much wow="xml"/>" }
- 14. Azure Event Grid
- 15. Manage all events in one place
- 17. What these big numbers mean… 99.9998%2,500,000,000,000 5 million failures
- 18. Azure Event Grid Dead Letter Handling https://docs.microsoft.com/azure/event-grid/manage-event-delivery
- 19. Azure Event Grid Limitations
- 20. Creating Topics – Method #1
- 21. Creating Topics – Method #2
- 22. Event Grid, Event Hubs, Service Bus? https://buildazure.com/2017/09/07/a-tour-of-azure-messaging-services-queues-event-grid-iot-hub-and-more/ Service Bus Event Hub Event Grid • High-value enterprise messaging • Order processing and financial transactions • Control • Pull model • Big data pipeline • Telemetry • Distributed data streaming • Replay • Event handling • Reactive programming • Push model
- 24. Storage Blob Event Grid Webhook Webhook Storage Event Subscription ext = *.jpg Subscription ext = *.pdf
- 26. Microsoft Azure Resource Group Event Grid Azure Function Logic App Virtual machine Storage table Outlook Connector Azure Function Administrator
- 27. Summary Event-driven design allows for cost-effective, real- time, responsive applications Event Grid provides a robust serverless solution for easily building reactive event-driven cloud applications Use the right tool for the job! NO SPORKS WERE HARMED IN THE MAKING OF THIS PRESENTATION
Hinweis der Redaktion
- No need for context or relationship to other events to be significant; ex: file created
- Meaning is derived from a group of recorded metrics Think of a chart with a time-based X axis
- “This happens when a system sends event messages to notify other systems of a change in its domain. A key element of event notification is that the source system doesn't really care much about the response. Often it doesn't expect any answer at all, or if there is a response that the source does care about, it's indirect. There would be a marked separation between the logic flow that sends the event and any logic flow that responds to some reaction to that event.”
- Can derive the current status of a resource from its event history (ordered sequence of events) Can recover state because events are immutable “The core idea of event sourcing is that whenever we make a change to the state of a system, we record that state change as an event, and we can confidently rebuild the system state by reprocessing the events at any time in the future. The event store becomes the principal source of truth, and the system state is purely derived from it. For programmers, the best example of this is a version-control system. The log of all the commits is the event store and the working copy of the source tree is the system state.”
- APIs are abundant, data is ubiquitous. Think about all the notifications Copernican shift – how to maintain data consistency between all those APIs?
- Simplicity - Point and click to aim events from your Azure resource to any event handler or endpoint. Built-in Events - Get up and running quickly with resource-defined built-in events. Custom Events - Use Event Grid route, filter, and reliably deliver custom events in your app. Additional Sources: Azure App Configuration Azure Container Registry Azure Event Hubs Azure IoT Hub Azure Key Vault Azure Machine Learning Azure SignalR
- Based on Service Fabric 99.99% availability https://docs.microsoft.com/en-us/azure/event-grid/delivery-and-retry 10 seconds 30 seconds 1 minute 5 minutes 10 minutes 30 minutes 1 hour Event Grid adds a small randomization to all retry intervals.
- Q: What do these big numbers mean? A: It means you still need to build some error handling in your apps!
- 1MB size limit in preview
- Service Bus: High-value enterprise messaging - Order processing and financial transactions Event Hubs: Big data pipeline - Telemetry and distributed data streaming Event Grid: Reactive programming - React to status changes
- Probably won’t have time for this demo…