Wednesday 23 October 2019

Getting started with Azure Event Grid

As a human being, every new thing scares us. Same was the case with me when I tried started working on Azure Event Grid. No article I was able to find that works out steps by step. The learning curve looked steep almost vertical ;)
Well in this post I try to reduce those efforts for you. I will try to list out the details required to get you started with Event Grid.

Below image is taken from Microsoft Event Grid documentation website.

Azure Event Grid as its mentioned everywhere, its a way to publish/subscribe your events in an easy way. If your subscriber is down It tries in a Exponential back-off way to deliver the message for 24 hours.

First thing you should know is 'Topic'. What is a topic?
Topic is an endpoint where the source sends the event. To respond to certain types of events, subscribers decide which topics to subscribe to.

Event Grid provides below-mentioned event sources: (Topics are already available, you can subscribe to them easily)
  • Azure Subscriptions
  • Container Registry
  • Custom Topics
  • Event Hubs
  • IoT Hub
  • Media Services
  • Resource Groups (management operations)
  • Service Bus
  • Storage Blob
  • Azure Maps

Below mentioned Event Handlers are supported: (You can receive the events using any of the below mechanism)
  • Azure Automation
  • Azure Functions
  • Event Hubs
  • Hybrid Connections
  • Logic Apps
  • Microsoft Flow
  • Queue Storage
  • Service Bus (Preview)
  • WebHooks

The good thing is that you can publish an event of your own using a schema (Custom topic). what it means in real world terms is you call an api with the data in specified format and it will work as event generated and event grid will push it to all the subscribers of that event.

There are three types of schema available.
In case of inbuilt event providers you can even apply filters to the event, so you will get the event you wish to.

Retry policies can be configured. You can also expire the event after certain time.

Please share your thoughts in the comments below.

1 comment:

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