How to set up Headless NextJS app in Disconnected Mode on Sitecore?

Sitecore Headless offers several ways to set up the environment, with four different modes available: Disconnected mode, connected mode, Integrated mode, and API mode.

This blog will focus on setting up the Sitecore Headless services with Next-Js in Disconnected mode. This mode is suitable for development purposes, where data is usually obtained from static YAML or JSON files.

For production or connected development, the route data is obtained by making requests to the Sitecore Layout Service. This service can be using either HTTP requests or in-process for Integrated mode SSR.

To configure the Disconnected mode, follow the steps below

Step: 1 For this installation we required some Pre-Requisites as per the below list.

1. Node js – Install the latest node js Download Node.js 
2. Now you can check your NPM version in PowerShell by executing this command: npm -v 
3. Now your next step is download Sitecore XM/XP 10.2 from this URL Graphical setup package for XM Scaled  and follow Sitecore 10.0.2 Installation Process
4. Download Sitecore packages for Sitecore Headless Rendering from  Sitecore Headless Rendering 20.0

Step: 2 Install Sitecore CLI 

Now Open PowerShell in Admin mode and execute the below command for installing Sitecore CLI, 

npm install -g @sitecore-jss/sitecore-jss-cli 

Step: 3 Now we are Create new next js application

• Move C:\ to anywhere you want to create your project. In my machine I have moved D:\Workstation\NextJss.
• Now executing the below command, we can create Nexjs application and also refer below image for other configuration.

npm init sitecore-jss nextjs   

  Important    Enter Sitecore hostname as mynextjs.dev.local in next connected mode blog. This host name we will create in connected mode blog.

You will see the below image for application is created successfully ab also display a some basic command for run the application.

Now you can check application in your directories your see some nextjs folder structure for applications. 

Step: 4 Now we are run the application in disconnected mode

Go to the application root folder structure and execute below command for starting your application.

jss start

Wait for some time to start the application. Go to localhost URLhttp://localhost:3000 to see the home page of our application. 

Now we can see the application successfully running in disconnected mode.  

By following the above given steps and process, you will be able to setup the headless NextJS app even in the disconnected mode in Sitecore. In the next blog, we will explore how to setup the same for Connected Mode.