Event triggered functions in GCP - Cheat Sheet & Quick Revision

Recall & Review

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What is an event triggered function in Google Cloud?

An event triggered function runs automatically when a specific event happens, like a file upload or a message arrival. It reacts to changes without needing manual start.

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Name two common event sources for Google Cloud Functions.

1. Cloud Storage (e.g., file upload)<br>2. Pub/Sub (message arrival)<br>These trigger functions to run when events happen.

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How does an event triggered function differ from an HTTP triggered function?

Event triggered functions run automatically on events like file changes or messages. HTTP triggered functions run only when someone sends an HTTP request.

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What is a practical example of using an event triggered function?

Automatically resizing images when a new photo is uploaded to Cloud Storage. The upload event triggers the function to process the image.

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Why are event triggered functions useful in cloud architecture?

They allow automation and real-time response without manual intervention, saving time and resources by reacting only when needed.

Which of these can trigger a Google Cloud event triggered function?

A A user clicking a button on a website

B A manual command in the terminal

C A new file uploaded to Cloud Storage

D A scheduled timer only

Event triggered functions respond to events like file uploads, not manual commands or user clicks directly.

What type of event source is Pub/Sub in Google Cloud Functions?

A File storage event source

B Message queue event source

C HTTP request event source

D Database change event source

Pub/Sub is a messaging service that triggers functions when messages arrive.

How does a Cloud Function know when to run if it is event triggered?

A It runs only when manually started

B It runs every hour automatically

C It waits for a user to press a button

D It listens for specific events configured during setup

Event triggered functions are set up to listen for specific events and run automatically when those happen.

Which is NOT a benefit of event triggered functions?

A Manual start required every time

B Enables real-time automation

C Saves resources by running only when needed

D Automatic response to events

Event triggered functions do NOT require manual start; they run automatically.

What happens if an event triggered function fails during execution?

A It can be retried automatically depending on configuration

B It never runs again

C It sends an email to all users

D It shuts down the entire cloud project

Google Cloud Functions can be configured to retry on failure to ensure the event is processed.

Explain how event triggered functions work in Google Cloud and give an example use case.

Think about what happens when a file is uploaded or a message arrives.

Describe the benefits of using event triggered functions in cloud applications.

Consider how automation saves time and resources.