Salesforce Streaming Api and use cases. Used in Fremont Community Group Session of September 2019.

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

5. Technology Behind it

6. Underlying Mechanisms

7. How is the connection negotiated & maintained

8. Four Streaming APIs

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