🚀 Monolithic Quiz Application (Spring Boot)

📌 Overview

This project is a monolithic Quiz Application built using Spring Boot, designed to manage quiz creation, question handling, and answer submission within a single unified backend system.

It demonstrates core backend development concepts including REST API design, layered architecture, and database integration.

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🧩 Key Features

• Create and manage quiz questions
• Retrieve questions by category
• Generate quizzes dynamically
• Submit quiz answers and evaluate responses
• Fetch quiz results
• RESTful API-based architecture

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🏗 Architecture

This application follows a monolithic architecture, where all components (Controller, Service, Repository, and Database) are tightly integrated within a single codebase.

Layers:

• Controller Layer → Handles HTTP requests
• Service Layer → Contains business logic
• Repository Layer → Handles database operations
• Database Layer → Stores quiz & question data

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⚙️ Tech Stack

• Java 17
• Spring Boot
• Spring Data JPA
• Maven
• MySQL / PostgreSQL
• REST APIs
• Postman (for API testing)

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🗂 Project Structure

src/
 ├── controller/
 ├── service/
 ├── repository/
 ├── model/
 └── resources/

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▶️ Getting Started

1. Clone the Repository

git clone https://github.com/Shrivastav0yash/Monolithic-Quiz-App-Spring-boot
cd Monolithic-Quiz-App-Spring-boot

2. Configure Database

Update application.properties:

spring.datasource.url=jdbc:mysql://localhost:3306/questiondb
spring.datasource.username=your_username
spring.datasource.password=your_password
spring.jpa.hibernate.ddl-auto=update

3. Run the Application

mvn spring-boot:run

Application runs at:

http://localhost:8080

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📡 API Endpoints

Question APIs

• GET /question/allQuestions → Get all questions
• GET /question/category/{category} → Get questions by category
• POST /question/add → Add new question

Quiz APIs

• POST /quiz/create → Create quiz
• GET /quiz/get/{id} → Get quiz
• POST /quiz/submit/{quizId} → Submit answers

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🧪 Testing

• Tested using Postman collections
• Supports full CRUD operations for questions and quizzes

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🎯 Learning Outcomes

• Understanding of Monolithic Architecture
• Building REST APIs using Spring Boot
• Working with Relational Databases using JPA
• Structuring backend projects using layered design

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🔮 Future Improvements

• Convert into Microservices Architecture
• Add Authentication & Authorization (JWT)
• Implement API Gateway & Service Discovery
• Add Docker support
• Improve scalability and fault isolation

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📌 About

This project serves as a foundational backend system for quiz applications and demonstrates how a monolithic system can be structured before transitioning to microservices.

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