microsoft-extensions-configuration

You validate .NET configuration settings at startup by implementing IValidateOptions to run custom validation logic, preventing runtime errors due to misconfiguration. This ensures robust configuration management before the application starts.

The best way to bind appsettings.json to strongly-typed classes in .NET is using the IOptions pattern. This configuration binding process automatically maps application settings to testable configuration classes for easier consumption and maintenance.

The IOptions pattern handles different option lifetimes in .NET by supporting Singleton, Scoped, and Monitor lifetimes. This allows you to manage dynamic configuration scenarios and consume application settings safely across various dependency injection use cases.

Yes, you can implement custom validation logic for .NET application settings using the IValidateOptions interface. This configuration management approach allows complex validation rules to execute at startup, ensuring testable configuration and preventing invalid application states.

Validating configuration at application startup prevents runtime errors caused by misconfiguration. Applying startup validation using strongly-typed settings and IValidateOptions ensures your .NET application fails fast with clear errors before serving requests.