Structure of Backend API

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Table of Contents

• Description
• Structure
  • Application Components
• Explanation

Description

This is a structure of the backend API application built with Express.js. It defines the main entry point, routing architecture, and basic middleware configuration for the GitRay backend service.

Structure

src/
├── index.ts              # Main application entry point
└── routes/
    └── index.ts          # API route definitions

Application Components

src/index.ts:

• Initializes Express app
• dotenv.config() loads environment variables
• app.use(cors()), app.use(express.json())
• Mount /api → routes/index.ts
• Global error handling
• app.listen(PORT)

src/routes/index.ts:

• Router instance
• GET /api/ → { message: "Hello from Backend!" }

Explanation

We chose this structure to maintain a clear separation of concerns:

• Single Entry Point: index.ts serves as the main application bootstrap, handling all global middleware setup and server initialization
• Modular Routing: Routes are separated into their own directory structure, allowing for better organization as the API grows
• Middleware Chain: The structure follows Express.js best practices with middleware applied at the application level before mounting routes
• Scalability: This foundation allows for easy expansion with additional route modules, middleware, and services as the application evolves