📦 Stock Management System

A scalable and maintainable Stock Management System built using Spring Boot with RESTful API architecture to manage inventory lifecycle operations including product creation, updates, filtering, retrieval, and deletion.

The project follows a clean layered architecture and demonstrates enterprise-grade backend development practices using Java and Spring Boot.

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🚀 Project Status

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📑 Table of Contents

• Project Overview
• Key Features
• Technology Stack
• System Architecture
• Project Structure
• API Endpoints
• Installation & Setup
• Running the Application
• API Testing
• Error Handling
• Performance & Scalability
• License

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📖 Project Overview

The Stock Management System is a RESTful web application designed to manage stock and inventory operations efficiently.

The application supports:

• Product inventory management
• CRUD operations for stock lifecycle
• Product filtering and retrieval
• REST API communication
• Layered backend architecture
• API testing and validation

The system was developed using Spring Boot following industry-standard backend development practices for scalability and maintainability.

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✨ Key Features

📦 Inventory Management

• Create stock items
• Update inventory records
• Delete stock entries
• Retrieve product details
• Manage stock lifecycle operations

🔍 Filtering & Search

• Product filtering APIs
• Search-based inventory retrieval
• Category and stock-based querying

🏗 Backend Architecture

• Layered architecture implementation
• Controller-Service-Repository pattern
• Separation of concerns
• Scalable backend structure

🌐 RESTful API Development

• REST-compliant endpoint design
• JSON request/response handling
• HTTP status code management
• Exception handling mechanisms

🧪 API Testing

• Postman API testing
• Edge-case validation
• Response verification
• Error response testing

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🛠 Technology Stack

Technology	Purpose
Java	Core Programming Language
Spring Boot	Backend Framework
Spring Web	REST API Development
HTML	Frontend Structure
CSS	Styling
JavaScript	Frontend Interactivity
Postman	API Testing

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🏗 System Architecture

Client (HTML/CSS/JS)
        │
        ▼
REST API Layer (Spring Boot Controllers)
        │
        ▼
Service Layer (Business Logic)
        │
        ▼
Repository Layer (Data Access)
        │
        ▼
Database

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📂 Project Structure

stock-management-system/
│
├── src/
│   ├── main/
│   │   ├── java/
│   │   │   └── com/example/stockmanagement/
│   │   │       ├── controller/
│   │   │       ├── service/
│   │   │       ├── repository/
│   │   │       ├── model/
│   │   │       └── StockManagementApplication.java
│   │   │
│   │   └── resources/
│   │       └── application.properties
│   │
│   └── test/
│
├── frontend/
│   ├── index.html
│   ├── style.css
│   └── script.js
│
├── pom.xml
└── README.md

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🔌 API Endpoints

Base URL

http://localhost:8080/api

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Stock Endpoints

Method	Endpoint	Description
GET	/stocks	Retrieve all stock items
GET	/stocks/{id}	Retrieve stock item by ID
POST	/stocks	Create new stock item
PUT	/stocks/{id}	Update stock item
DELETE	/stocks/{id}	Delete stock item

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Example Request

Create Stock Item

POST /api/stocks

{
  "productName": "Wireless Mouse",
  "category": "Electronics",
  "quantity": 50,
  "price": 25.99
}

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Example Response

{
  "id": 1,
  "productName": "Wireless Mouse",
  "category": "Electronics",
  "quantity": 50,
  "price": 25.99
}

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⚙️ Installation & Setup

Prerequisites

Ensure the following are installed:

• Java JDK 17+
• Maven
• IDE (IntelliJ IDEA / VS Code / Eclipse)
• Postman

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▶️ Running the Application

Clone Repository

git clone https://github.com/your-username/stock-management-system.git
cd stock-management-system

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Run Backend Server

mvn spring-boot:run

Application will start on:

http://localhost:8080

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Build Project

mvn clean install

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🧪 API Testing

The APIs were tested using Postman to validate:

• CRUD functionality
• HTTP response codes
• Error handling
• Invalid request scenarios
• Edge cases

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Example HTTP Status Codes

Status Code	Meaning
200	Success
201	Resource Created
400	Bad Request
404	Resource Not Found
500	Internal Server Error

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⚠️ Error Handling

The application includes structured exception handling for:

• Invalid input data
• Missing resources
• Server-side failures
• Invalid API requests

Example:

{
  "timestamp": "2026-05-12T10:30:00",
  "status": 404,
  "error": "Not Found",
  "message": "Stock item not found"
}

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⚡ Performance & Scalability

Scalability Features

• Layered architecture design
• Modular service structure
• Separation of business logic
• Maintainable code organization

Performance Practices

• Efficient API routing
• Structured request handling
• Reusable service methods
• Lightweight REST communication

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🔒 Security Considerations

Recommended production enhancements:

• JWT Authentication
• Role-Based Access Control (RBAC)
• Input validation & sanitization
• HTTPS enforcement
• Environment-based configurations

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📊 Project Highlights

✅ RESTful API Development ✅ Spring Boot Backend Architecture ✅ CRUD Operations ✅ Layered Architecture ✅ API Testing with Postman ✅ Error Handling & Validation ✅ Maintainable & Scalable Design

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📄 License

This project is licensed under the MIT License.

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👨‍💻 Author

Developed as a backend-focused inventory and stock lifecycle management system using Spring Boot and RESTful architecture principles.

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⭐ Final Notes

This project demonstrates:

• Enterprise-level backend structuring
• REST API engineering best practices
• Scalable Spring Boot architecture
• Maintainable Java application design
• Professional API testing workflows