An advanced ASP.NET Core Web API for managing a book library, demonstrating best practices in routing, middleware, caching, authorization, logging, documentation, testing, and performance.

• 📖 Complete Book Management - Create, read, update, and delete books with all details
• 👩‍💻 Author Tracking - Link books to authors with biographical information
• 🏷️ Category Organization - Assign multiple categories to books
• ⭐ Review System - Store and retrieve book reviews with ratings
• 🔍 Advanced Search - Find books by title, author, or description using LINQ
• 📊 Rating Analytics - Calculate average ratings across books
• 📘 API Documentation - Auto-generated Swagger/OpenAPI documentation
• Advanced Routing: Attribute routing, route constraints, and custom routes.
• Middleware & Filters: Custom request logging middleware and action logging filter.
• Caching: Response caching, in-memory caching, and distributed Redis caching.
• Role-Based Authorization: Restrict endpoints to roles (e.g., Admin for create/update/delete).
• Logging & Monitoring: Serilog integration, health check endpoint (/health).
• Automated Testing: xUnit and Moq for unit testing controllers and repositories.
• Performance Tuning: AsNoTracking, pagination, and profiling guidance.
• Pagination: All major endpoints support paginated responses with metadata (total count, page, size, total pages).

graph TD A[Controllers] --> B[Repositories] B --> C[DbContext] C --> D[(SQL Database)] subgraph "Data Models" E[Book] <--> F[Author] E <--> G[Category] E <--> H[Review] end 

• .NET 6.0 SDK or newer
• SQL Server (LocalDB or full version)
• Visual Studio / VS Code or preferred IDE

1. Clone & Navigate:

   git clone https://github.com/NickiMash17/BookLibrarySystem.git cd BookLibrarySystem

2. Restore Packages:

   dotnet restore

3. Set Up Database:

   dotnet ef database update

4. Launch the API:

   dotnet run

5. Explore with Swagger:

   https://localhost:7001/swagger/index.html 

BookLibrarySystem/ ├── 🎮 Controllers/ │ └── BooksController.cs ├── 💾 Data/ │ ├── BookLibraryContext.cs │ └── DbInitializer.cs ├── 📋 Models/ │ ├── Author.cs │ ├── Book.cs │ ├── BookCategory.cs │ ├── Category.cs │ └── Review.cs ├── 🔄 Repositories/ │ ├── BookRepository.cs │ └── IBookRepository.cs ├── 🔀 Migrations/ ├── ⚙️ appsettings.json └── 🚀 Program.cs 

• Repository Pattern - Separation of data access logic
• Dependency Injection - Built-in .NET Core DI container
• LINQ Query Objects - For complex database queries with strong typing
• Entity Framework Core - ORM for database operations
• OpenAPI/Swagger - For automatic API documentation and testing

// Get all books with ratings above 4.0 var highlyRatedBooks = await _context.Books .Include(b => b.Author) .Include(b => b.Reviews) .Where(b => b.Reviews.Average(r => r.Rating) >= 4.0) .ToListAsync();

Contributions make the open-source community amazing! Follow these steps:

1. Fork the project
2. Create your feature branch (git checkout -b feature/AmazingFeature)
3. Commit changes (git commit -m 'Add some AmazingFeature')
4. Push to branch (git push origin feature/AmazingFeature)
5. Open a Pull Request

This project is licensed under the MIT License - see the LICENSE file for details.