quickstarts/pub_sub/javascript

Dapr pub/sub

In this quickstart, you'll create a publisher microservice and a subscriber microservice to demonstrate how Dapr enables a publish-subcribe pattern. The publisher will generate messages of a specific topic, while subscribers will listen for messages of specific topics. See Why Pub-Sub to understand when this pattern might be a good choice for your software architecture.

Visit this link for more information about Dapr and Pub-Sub.

This quickstart includes one publisher:

• Node client message generator checkout

And one subscriber:

• Node subscriber order-processor

Run Node message publisher with Dapr

1. Open a new terminal window and navigate to checkout directory:

cd checkout

2. Install dependencies:

npm install

3. Run the Node publisher app with Dapr:

npm start:dapr

Run Node message subscriber with Dapr

1. Open a new terminal window and navigate to checkout directory:

cd order-processor

2. Install dependencies:

npm install

3. Run the Node subscriber app with Dapr:

npm start:dapr