🚀 Building My First Backend Project: Expense Tracker API

As part of my journey into backend development, I recently built my first REST API — an Expense Tracker API. The goal of the project was simple: create a backend system that allows users to track expenses, organize them by category, and manage financial records through an API. This project helped me understand how real backend systems are structured, from database design to API architecture. 💡 Project Overview The Expense Tracker API is a RESTful backend service that allows users to: Create and manage expense categories Add and track expenses Organize expenses by category Perform CRUD operations through API endpoints It acts as the backend engine that could power a mobile app, web dashboard, or financial management system. ⚙️ Tech Stack For this project, I used the following technologies: Node.js – Runtime environment Express.js – Web framework for building the API PostgreSQL – Relational database Sequelize ORM – Database modeling and migrations Docker – Containerized development envir