SOLID & Design Patterns Interview Question #116

What is the Options Pattern in ASP.NET Core?

Architectural Patterns, Application Boundaries & Distributed Design Patterns Senior Advanced

Quick Interview Answer

The Options Pattern provides strongly typed access to related configuration values. Configuration sections are bound to classes that can be injected through options abstractions.

Detailed Explanation

The Options Pattern provides strongly typed access to related configuration values. Configuration sections are bound to classes that can be injected through options abstractions.

This avoids scattering string-based configuration lookups throughout the application and makes configuration requirements easier to validate and test.

Code Example

public class EmailOptions
{
    public string Host { get; set; } = "";
    public int Port { get; set; }
}

builder.Services.Configure<EmailOptions>(
    builder.Configuration.GetSection("Email"));