Salesforce Event Driven Architecture is the new way of implementing business logic by leveraging High Volume Platform Event. The Event Driven Architecture is also called as a publisher/subscriber model where the publishers and the subscribers are not known to each other and can co-exist independently.
Table of Contents
What is event-driven architecture?
Event-Driven Software Architecture An event-driven (or message-driven) software architecture consists of event producers, event consumers, and channels. The architecture is suitable for large distributed systems because it decouples event producers from event consumers, thereby simplifying the communication model in connected systems.
What is platform event in Salesforce?
A platform event is a special kind of Salesforce entity, similar in many ways to a Salesforce object. An event message is an instance of a platform event, similar to how a record is an instance of a Salesforce object.
Why platform events and change data capture for Salesforce integration?
The ease with which we can build such an integration based on a combination of Platform Events and Change Data Capture has helped our clients reduce implementation costs on the Salesforce side by at least half.
What is an event-based software architecture?
The following diagram illustrates an event-based software architecture. Unlike request-response communication models, software architecture built on an event-driven model decouples event producers from event consumers, thereby simplifying the communication model in connected systems.
Is Salesforce event-driven architecture?
The Salesforce enterprise messaging platform offers the benefits of event-driven software architecture. Platform events are the event messages that your apps send and receive. They simplify the process of communicating changes and responding to them without requiring you to write complex logic.
What is event-driven architecture used for?
An event-driven architecture uses events to trigger and communicate between decoupled services and is common in modern applications built with microservices. An event is a change in state, or an update, like an item being placed in a shopping cart on an e-commerce website.
What is event-driven architecture example?
An Event-Driven Architecture for data and applications is a modern design approach centered around data that describes “events” (i.e., something that just happened). Examples of events include the taking of a measurement, the pressing of a button, or the swiping of a credit card.
What is event-driven programming in Salesforce?
Event-Driven Architecture with Salesforce Declarative integration tool that enables users to build process automations for data without writing code. Connector that enables sending and receiving messages to queues and topics for any message service that implements the Java Message Service (JMS) specification.
What are the advantages of event-driven architecture?
Benefits of event-driven architecture. Event-driven architecture can help solve the problems of the close coordination of microservices, error handling and retries, and coordination between development teams.
What is meant by event-driven?
An event-driven application is a computer program that is written to respond to actions generated by the user or the system. In a computing context, an event is any identifiable occurrence that has significance for system hardware or software.
Is event-driven real time?
Real time in the context of APIs means so much more. By design, real-time APIs are event-driven; this is a fundamental shift from the request-response pattern of RESTful services.
What is the difference between pub/sub and event-driven?
An event driven architecture can use a pub/sub model or an event stream model. Pub/sub: The messaging infrastructure keeps track of subscriptions. When an event is published, it sends the event to each subscriber. After an event is received, it cannot be replayed, and new subscribers do not see the event.
What is an event-driven design?
Event-driven architecture (EDA) is a software design pattern that enables an organization to detect “events” or important business moments (such as a transaction, site visit, shopping cart abandonment, etc) and act on them in real time or near real time.
What is pub/sub model in Salesforce?
Pub-Sub Model is essentially used to transfer the information between the component which are not in the same DOM hierarchy – which means that the components are not connected/ related in any way with each other using the parent-child relationship.
How do I see platform event records in Salesforce?
View Event Subscribers From Setup, enter Platform Events in the Quick Find box, then select Platform Events. Click your event’s name. On the event’s definition page, the Subscriptions related list shows all the active triggers, processes, and platform event–triggered flows that are subscribed to the platform event.
Can Salesforce subscribe to external events?
You can publish event messages from a Force.com app or an external app using Apex or Salesforce APIs and you can subscribe from the Salesforce or external apps or use long polling with cometD as well.
Why is architecture important in distributed systems?
The architecture is suitable for large distributed systems because it decouples event producers from event consumers, thereby simplifying the communication model in connected systems. A change in state that is meaningful in a business process. For example, placement of a purchase order is a meaningful event because the order fulfillment center …
What is an event consumer?
Event consumer. A subscriber to a channel that receives messages from the channel. For example, an order fulfillment app that is notified of new orders. Event bus. A communication and storage service that enables event streaming using the publish-subscribe model.
What is platform event in Salesforce?
Platform events enable the flow of event messages within Salesforce and to or from external apps. Apps on the Salesforce platform use an Apex method to publish events and an Apex trigger or the empApi Lightning component to consume events. As an alternative to code, you can publish events with declarative tools, such as Process Builder and Flow Builder. External apps publish events using the sObject API and consume events using CometD. As you can see, there is a lot of flexibility in how you choose to use Platform Events!
What is platform event?
Platform events are similar to generic events but offer more powerful customization. With platform events, you can publish any custom data. You define the schema of event data at a granular level as typed fields. Also, you can use platform events in native Salesforce platform apps and external apps alike.
What is a trigger in Salesforce?
The external system publishes a platform event to alert Salesforce to the merchandise return. An event listener (a trigger) in Salesforce receives the event and performs some actions. For example, the trigger might alert the sales representative to the return, and send a confirmation email to the customer.
What happens when an opportunity closes in Salesforce?
When an opportunity closes in Salesforce, your company has won a deal with a customer. Let’s say you use vendors to ship products associated with an opportunity. Each vendor has an external app that processes shipment orders. The external app listens to platform events. When an opportunity closes, a trigger, which is part of a product order app in Salesforce, fires and publishes a platform event message. Each vendor app is notified of the event and creates a shipment order for a specific product.
What is an event in business?
Event. A change in state that is meaningful in a business process. For example, placement of a purchase order is a meaningful event, because the order fulfillment center expects to receive a notification before processing an order. Event message. A message that contains data about the event.
What is event based communication?
Event-based communication takes place in real-time—or, more accurately, in near-real time. Radio waves travel at the speed of light, but event-based software and hardware systems typically have some latencies.
Can consumers receive and react to the same events?
Any number of consumers can receive and react to the same events. When an event occurs, systems obtain this information and can react to it in near-real time. Systems that send events and others that receive the events don’t have dependencies on each other, except for the semantics of the message content.
How to use this guide
Salesforce Architect Decision Guides are written to give you information — directly from Salesforce product teams — that you need to make the best decisions for your organization.
Takeaways
The guide begins with a summary of key points covered throughout the document. These include preferred implementation approaches, as well as preferred tools and tools that are no longer preferred because Salesforce does not plan to continue investing in them.
Tool comparisons
This section includes a table that provides a side-by-side comparison of Salesforce tools that are relevant to event-driven architectures. Architects who are considering implementing event-driven architectures and are still evaluating tools can use this section to make quick comparisons.
Event-driven architecture patterns
This section contains additional details about specific event-driven architecture patterns, including:
Implementing event-driven architectures
The final section contains considerations for implementing event-driven architectures, including best practices for designing events, considerations for migrating to event-driven architectures, and a set of guidelines you can use to determine whether or not you should implement an event-driven architecture at all.
Additional resources
In addition to the tool comparison tables and downloadable architecture diagrams for every pattern discussed, the guide also includes links to additional product documentation where applicable.
Driving Value with Salesforce Integrations
As Solutions Architect, I often get into situations where Salesforce is not the only sheriff in an enterprise system’s town. My team and I must integrate the platform with other enterprise systems to help our clients deliver on the promise of a unified customer experience.
Salesforce Integrations Using Platform Events and Change Data Capture
In this post, I’ll describe how to loosely couple Salesforce with other systems within an enterprise using Platform Events and Change Data Capture (CDC) – two exciting and recent entrants to the Salesforce stables.
Architectural Approach
I arrived at some of key considerations for the architectural approach.
Design
With the approach solidified, we had to evolve a scalable design that wasn’t too cost-prohibitive on either system. We decided to model our custom Platform Events after the JSON structure of the CDC Event. That way, the processing logic would be pretty similar, whatever the type of event. Economies of scale leading to implementation cost savings.
Technology Stack
MDM sources data from diverse sources (4-5 internal and external systems) and produces master data records – either net new records or updates to existing records.
Salesforce Integration Results
We’ve clearly been able to deliver on the enterprise architecture goal of publish-subscribe style systems integrations. The ease with which we can build such an integration based on a combination of Platform Events and Change Data Capture has helped our clients reduce implementation costs on the Salesforce side by at least half.
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