How do platform events work in LWC?

How do platform events work in LWC?

Firstly we need to import empApi component to use Platform Event in Lightning Web Components (LWC). Then we need to pass channel name. We can use the same component to use the Push topic channel name. Finally, once the component loads we call the handleSubscribe() method to subscribe the channel.

How do you use platform events?

Define platform event similar like custom object, go to setup –> develope –> Platform events –> create new platform events as shown below. Run/Debug Flow:1(platform Event producer) and you will send post in chatter.

How do I subscribe to platform event in lightning component?

Subscribe to a Platform Event

1. Add the lightning:empApi Lightning component.
2. Update the instant notification app to make it dynamic.
3. Test the Lightning console app with a provided Heroku app.

How do you use an EMP connector?

Pages

1. Prerequisites.
2. Step 1: Create an Object.
3. Step 2: Create a PushTopic.
4. Step 3: Download and Build the Project.
5. Step 4: Use the Connector with Username and Password Login.
6. (Optional) Step 5: Use the Connector with OAuth Bearer Token Login.
7. Learn More About EMP Connector.

What are the default allocations for platform events?

Platform events that originate from an installed managed package share the org’s allocation for the maximum number of platform event definitions. If your org has no add-on licenses, default allocations apply for event publishing and delivery that can’t be exceeded.

Do you need to use managed packages in Salesforce?

You must use a Developer Edition organization to create and work with a managed package. To prevent naming conflicts, Salesforce recommends using managed packages for all packages that contain Apex to ensure that all Apex objects contain your namespace prefix.

How is platformeventusagemetric data broken down by event?

PlatformEventUsageMetric contains actual event usage data broken down by type of event for platform events and change data capture events. PlatformEventUsageMetric usage data is available for the last 24 hours, ending at the last hour, and for historical daily usage for the last 45 days.

How does empapi Lightning use concurrent client allocation?

The empApi Lightning component uses CometD and consumes the concurrent client allocation like any other CometD client. Each logged-in user using empApi counts as one concurrent client. If the user has multiple browser tabs using empApi, the streaming connection is shared and is counted as one client for that user.