我们是否需要维护每个订阅将具有唯一的 EventType 或者多个订阅可以在 Azure EventGrid 域中具有相同的 EventType

Question

I am using EventGrid Domain in my project,
I have created One Topic name "AccountService" and
Created 2 subscription( used WebHook endpoint)
SubscriptionName: CR_Account and EventType: CreateAccount and Endpoint: Endpoint1
and
SubscriptionName: UP_Account and EventType: UpdateAccount and Endpoint: Endpoint2

My concern is like can I create one more subscription
SubscriptionName: CRNew_Account and EventType: UpdateAccount and Endpoint: Endpoint3

so that when EventGrid receives Event then it has to trigger both Subscriptions(here "CR_Account" and "CRNew_Account")

Answer 1

The AEG supports a Fan-Out pattern, where the topic event message is multicast to all its subscribed subscriptions and based on their filtering, the event message is delivered to the destination endpoint in the reliable manner.

In your case, both subscriptions such as CR_Account and CRNew_Account with a filtering on the EventType CreateAccount will received the same topic event message.