quickstarts/pub_sub/javascript/sdk

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.

Note: This example leverages the Dapr client SDK. If you are looking for the example using only HTTP requests click here.

This quickstart includes one publisher:

• Node client message generator checkout

And one subscriber:

• Node subscriber order-processor

Run Node message publisher with Dapr

1. Install dependencies:

cd pub_sub/javascript/sdk/checkout
npm install

3. Run the Node publisher app with Dapr:

dapr run --app-id checkout --components-path pub_sub/components/  --app-port 5001 -- node pub_sub/javascript/sdk/checkout/

Run Node message subscriber with Dapr

1. Install dependencies:

cd pub_sub/javascript/sdk/order-processor
npm install

3. Run the Node publisher app with Dapr:

dapr run --app-id checkout --components-path pub_sub/components/  --app-port 5001 -- node pub_sub/javascript/sdk/order-processor/