What is the Repository Pattern?

The Repository Pattern is a design pattern that mediates data from and to the domain and data access layers. It provides a collection-like interface for accessing domain objects, abstracting the underlying data source.

Key Benefits

• Decouples business logic from data access logic
• Promotes testability and maintainability
• Centralizes data access logic
• Supports multiple data sources

Example Implementation

public interface IRepository
{
    IEnumerable GetAll();
    T GetById(int id);
    void Add(T entity);
    void Update(T entity);
    void Delete(int id);
}

public class Repository : IRepository
{
    // Implementation details...
}

When to Use

Use the Repository Pattern when you want to abstract data access, support unit testing, or manage multiple data sources in your application.

"Repository Pattern helps you write clean, maintainable, and testable code by separating concerns."