Salesforce Streaming Api
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Jayant Jindal leads the Salesforce User Group in Fremont, CA. His presentation covers Streaming API, including the four types of Streaming APIs, how connections are negotiated and maintained, and use cases. The presentation also discusses Platform Events and Change Data Capture, providing hands-on examples. It outlines new features from Summer '19 and Winter '20 releases related to Platform Events and CDC.
Salesforce Streaming Api
- 1. Jayant Jindal Fremont, CA Salesforce User Group Lead https://www.linkedin.com/in/jayantjindal @jayantjindal Streaming API
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- 3. • Check-In : 5 min. • Streaming API: 40 min. • Icebreaker : 5 min. • Networking Reception: 10 min. Agenda
- 4. What is the Streaming API
- 7. How is the connection negotiated & maintained
- 9. Streaming API • A Single Technology • Pub/sub, event-driven architecture • PUSH technology with replay capability. • Event-driven systems streamline the communication between distributed enterprise systems, increase scalability, and deliver real-time data • Use Cases • System integrators • Devices • Real time apps
- 10. Difference between Streaming APIs
- 11. Platform Events and Change Data Capture
- 12. Platform Event – Sequence
- 13. EMP API Lightning Component
- 14. Hands-On
- 15. CDC-When to Use • Receive notifications of Salesforce record changes, including create, update, delete, and undelete operations. • Capture all field changes for all records. • Perform data updates using transaction boundaries when more than one operation is part of the same transaction • Subscribe to mass changes in a scalable way. • Get access to retained events for up to 3 days
- 16. Hands-On – Use Cases • UC would like to send notifications to their external recruiters whenever a position is open and has the status high or critical.
- 17. What’s New in Summer ’19/Winter ’20
- 18. Platform Events & CDC – Summer 19 • Summer 19 • lightning-emp-api LWC • Platform Events • Publisher behavior (immediately or after commit) • Resume checkpoint for process events in triggers • Asynchronous process events publish error notifications (Beta) • CDC • Triggers • Custom CDC <group> channels • Standard CDC events
- 19. Platform Events & CDC – Winter 20 • Platform Events • Receive Relevant Event Messages Using Event Filters with a CometD. E.g.: /event/Low_Ink__e?Model_Number__c='XZO-5'&&Ink_Percentage__c=0.2 • Monitor Platform Event Publishing Usage in REST API • HourlyPublishedPlatformEvents—High-volume platform event notifications published per hour • HourlyPublishedStandardVolumePlatformEvents—Standard-volume platform event notifications published per hour • Platform events provide a form of reliable messaging. Salesforce pushes the event to the subscribers. If the message doesn’t get picked up by the subscriber, the subscriber may choose to replay the messages using the replay ID of previously received events. • Configure Streaming API Settings with Metadata API • Use the new EventSettings Metadata API type to configure Streaming API settings, such as enabling Streaming API and dynamic generic event channel creation. Also, you can configure settings related to Event Monitoring and Platform Events
- 20. Platform Events & CDC – Winter 20 • CDC • Migrate Change Data Capture Channels and Members with Metadata API and Tooling API • Enrich Change Event Messages with Fields That Are Always Included • Determine Which Fields Changed with the New changedFields Header Field • Receive notifications of record changes for the AuthorizationFormConsent, ContentPointTypeConsent, and Individual objects.
- 21. Icebreaker
- 22. 1. What is the Change data capture event name for direct database changes ? 2. What is the Change data capture event name for more than 100k changes ?
- 23. References
- 24. • Appexchange Tool: Streaming Monitor: https://appexchange.salesforce.com/appxListingDetail?listingId=a0N3A00000FYEEWUA5 • https://www.youtube.com/watch?v=iFBATeMo2Es • https://trailhead.salesforce.com/en/content/learn/projects/workshop-platform- events/platform-event-define • https://developer.salesforce.com/events/webinars/change-data-capture • https://developer.salesforce.com/docs/component- library/bundle/lightning:empApi/documentation • https://developer.salesforce.com/blogs/2018/07/which-streaming-event-do-i-use.html REFERENCES
- 25. Q/A
- 26. Salesforce Fremont, CA User Group
Editor's Notes
- #10: PUSH technology - Not saved in database.
- #11: CDC: Happens outside of transaction i.e. 2nd option to do operation post 1st time on object; To enable more entities, contact Salesforce to purchase an add-on license; Delivered events contain only the fields that a subscribed user is allowed to view. Returned schema (Metadata) includes all object fields, even the fields that the user doesn’t have access to. Gap Events: Some operations are applied directly in the database, outside of a transaction in the Salesforce application servers. For example, archiving of activities or a data cleanup job in the database overflow event: is generated when a single transaction contains more than 100,000 changes. An overflow event contains only header fields. PushTopic: Structured data, Generic: Unstructured, P.E.: Structured data
- #17: CDC: Configure a Create Records element to create an instance of the platform event
- #19: Custom CDC <group> channels – account, contact and opportunities channel grouping Standard CDC events - Contract, Campaign