This document provides an overview of the library management application developed using Node.js and explains how to run it locally.

Express.js, TypeScript, TypeORM, Joi, PostgreSQL

The app supports the following operations:

• Listing Users
• Retrieving User Information
• Creating a New User
• Listing Books
• Retrieving Book Information
• Creating a New Book
• Borrowing a Book
• Returning a Book

• TypeORM: Simplifies and streamlines database interactions.
• Joi: Ensures data integrity by validating API requests.
• PostgreSQL: Provides a reliable and scalable database system.

User, Book, and Borrow entity models were designed according to the case study requirements. Since book viewing is more frequent than borrowing or returning, I optimized the database by storing the average rating directly in the Book entity. This approach ensures faster access to book information.

I used the controller, service, and repository pattern to maintain a clean separation of concerns, promoting efficient data handling and easy maintenance.

1. Install Dependencies:

   npm install

2. Setup Database:

   Run a Postgres db and configure your database connection in the .env file.

3. Build and Run:

   Development:

   • Watch changes and automatically recompile:

     npm run dev

   Production:

   • Build and start the server:

     npm run build
     npm run start

Feel free to contribute or raise any issues for improvements. Thank you for checking out this project!