Use NCache for Pub/Sub Messaging in Node.js

Pre-requisites

Before getting started with NCache in Node.js, take the following prerequisites under consideration:

Node.js version 14.15.3 or above is installed with Chocolatey.
JDK 9 is installed.
Environment Variable for Java is set.

Pub/Sub Demonstration of Pub/Sub

Follow the steps mention below to see how NCache acts as a communication medium for a Publisher/Subscribe model in Node.js.

Step 1: Download Sample From GitHub

Go to NCache repository on GitHub to download the repo containing Pub/Sub sample.

Step 2: Launch the Project

Launch the Pub/Sub sample application in Visual Studio Code or any IDE of your preference.

Step 3: Configure Settings

In the app-config.json file, replace the cacheName attribute with the cache that you created in the previous step. Save the file.

Step 4: Build the Project

Once you have configured the application with your custom cache, build the project.

Step 5: Monitor Cache Stats

To verify that NCache acts as a message broker for the sample publisher/subscriber application, NCache provides various stats counters that let you view the state of your cache. Go to Monitor Pub/Sub Topic Statistics to understand what these counters are and how to monitor them.