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Creating a Topic and Subscription with Pub/Sub in Google Cloud

Pub/Sub is a fully-managed real-time messaging service that allows you to send and receive messages between independent applications. You can use Pub/Sub as messaging-oriented middleware or event ingestion and delivery for streaming analytics pipelines. In this hands-on Lab, we will set up a topic and subscription and then publish a message.

Lab platform
Lab Info
Level
Beginner
Last updated
Sep 22, 2025
Duration
45m

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Table of Contents
  1. Challenge

    Creating a Topic and Subscription

    Make sure the lab's project is selected.

    1. From Google Cloud console's main navigation, choose Pub/Sub.
    2. Click Create a Topic.
    3. Give your topic a name, click Create Topic.
    4. From the Topics dashboard, head over to the Pub/Sub menu and select Subscriptions.
    5. Click on the existing subscription and then click on Edit to review the settings.
    6. Leave the defaults and click on Update to exit the edit window.
  2. Challenge

    Publishing a Message
    1. From the dashboard, head over to the Pub/Sub menu and select Topics.
    2. Once inside the Topics dashboard, click on the topic you have created.
    3. Click on the Messages tab at the bottom of the window and then Publish Message.
    4. For publish count, leave the Number of messages as 1.
    5. In the message body, you will type in the message you will like to push.
    6. Click Publish.
  3. Challenge

    Pulling the Message
    1. From the dashboard, head over to the Pub/Sub menu and select Subscriptions.
    2. Click on your subscription.
    3. Select the Messages tab.
    4. Under Messages, click Pull.
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