📚 Python Library App (Dockerized)

This project is a Python-based Library Management Application containerized with Docker Compose.
It demonstrates a microservices architecture with separate services for authentication, book management, borrowing system, and a frontend, all connected through custom Docker networks.

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🚀 Features

• Database (MySQL) for storing user, book, and borrowing data.
• Authentication Service for managing user logins and sessions.
• Book Service for managing available books.
• Borrow Service for handling borrow/return transactions.
• Frontend App Service to interact with the system.
• Uses Docker volumes for persistent database storage.
• Custom Docker bridge networks for secure service communication.

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🏗️ Architecture

The system consists of the following services:

1. Database (db)

   • Runs MySQL
   • Persists data with a named Docker volume
   • Exposes port 3306

2. Auth Service (auth_service)

   • Handles user authentication
   • Connects to both db and app networks
   • Runs on port 5001

3. Book Service (book_service)

   • Manages book records
   • Connects with the database
   • Runs on port 5002

4. Borrow Service (borrow_service)

   • Manages borrowing and returning of books
   • Connects with the database
   • Runs on port 5003

5. Frontend App (frontend)

   • Main entry point for users
   • Connects with auth_service, book_service, and borrow_service
   • Runs on port 5000

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🗂️ Project Structure

├── docker-compose.yml ├── database/ # MySQL Dockerfile & init scripts ├── auth/ # Auth service code & Dockerfile ├── book/ # Book service code & Dockerfile ├── borrow/ # Borrow service code & Dockerfile └── frontend/ # Frontend app code & Dockerfile

🔌 Networks

dbnet → Used for communication with the database.

middlenet → Internal communication between backend services.

appnet → Connects the frontend with backend services.

💾 Volumes

db_volume → Persists MySQL data so it is not lost when containers are restarted or removed.