Event Grid for event-driven architecture in Azure - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is Azure Event Grid?

Azure Event Grid is a service that allows applications to react to events from various sources in real time by routing those events to event handlers or subscribers.

beginner

How does Event Grid support event-driven architecture?

Event Grid enables event-driven architecture by delivering events from publishers to subscribers instantly, allowing systems to respond to changes without polling or manual checks.

intermediate

What are the main components of Azure Event Grid?

The main components are: Event Sources (publishers), Event Grid Topic (event routing), and Event Handlers (subscribers) that process the events.

intermediate

Why is Event Grid considered scalable and reliable?

Event Grid is scalable because it can handle millions of events per second and reliable because it guarantees at-least-once delivery with retry policies.

beginner

Give an example of a real-life scenario where Event Grid is useful.

For example, when a new file is uploaded to Azure Blob Storage, Event Grid can notify a function app to process the file automatically without delay.

What role does Event Grid play in event-driven architecture?

A Routes events from sources to handlers instantly

B Stores data permanently

C Manages virtual machines

D Creates databases

Event Grid routes events from publishers to subscribers instantly, enabling event-driven workflows.

Which component in Event Grid receives events from publishers?

A Event Grid Topic

B Event Source

C Event Handler

D Event Processor

The Event Grid Topic acts as the central point that receives events from sources and routes them to handlers.

How does Event Grid ensure event delivery reliability?

A By storing events indefinitely

B By requiring manual confirmation

C By sending events only once without retries

D By retrying delivery until acknowledged

Event Grid retries event delivery until the subscriber acknowledges receipt, ensuring reliable delivery.

Which Azure service can be an event handler for Event Grid events?

A Azure Virtual Machines

B Azure Functions

C Azure SQL Database

D Azure Blob Storage

Azure Functions can automatically run code in response to Event Grid events.

What is a benefit of using Event Grid over polling for changes?

A Increased network traffic

B More manual checks required

C Lower latency and less resource use

D Slower event processing

Event Grid delivers events instantly, reducing latency and resource use compared to polling.

Explain how Azure Event Grid enables event-driven architecture in simple terms.

Think about how messages travel from one app to another without waiting.

Describe a practical example where Event Grid can improve an application workflow.

Consider a file upload triggering a process automatically.