Deploying and Managing Cloud Pub/Sub
There are two tasks required to deploy a Pub/Sub message queue: creating a topic and creating a subscription. A topic is a structure where applications can send messages. Pub/Sub receives the messages and keeps them until they are read by an application. Applications read messages by using a subscription.
The first step for working with Pub/Sub is to navigate to the Pub/Sub page in Cloud Console. The first time you use Pub/Sub, the form will be similar to Figure 12.23.
FIGURE 12.23 Create a Pub/Sub topic.
When you click Create a Topic, you will be prompted for a name for the topic, as in Figure 12.24.
FIGURE 12.24 Name a topic.
You will see a list of topics displayed in the Topics page after creating the first topic, as shown in Figure 12.25.
FIGURE 12.25 List of topics
To create a subscription to a topic, click the three-dot icon at the end of the topic summary line in the listing. The menu that appears includes a Create Subscription...
