Express-session middleware in Express?

Express-session is an Express.js middleware that manages user sessions, storing user-specific data on the server and tracking it via cookies. It’s commonly used for login persistence, authentication, and maintaining state across multiple requests.

Steps to Use Express-session Middleware

Follow these steps to set up and use express-session for managing user sessions in your Express app.

Step 1: In the first step, we will create the new folder by using the below command in the VS Code terminal.

mkdir folder-name
cd folder-name

Step 2: After creating the folder, initialize the NPM using the below command. Using this the package.json file will be created.

npm init-y

Step 3: Now, we will install the express dependency for our project using the below command.

npm i express

Step 4: As we need to use the express-session middleware, we need to install it using npm. So for this article, we will be using third-party middleware as a express-session. So install it using the below command.

npm i express-session

Project Structure:

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The updated dependencies in package.json file will look like.

"dependencies": {
 "express": "^4.18.2",
 "express-session": "^1.17.3"
}

Example: Write the following code in App.js file

To run the application, we need to start the server by using the below command.

node app.js

Output: