Building Scalable Web APIs with .NET

A practical introduction to designing scalable and maintainable APIs using modern .NET.

Modern .NET provides a powerful platform for building high-performance web APIs. A scalable API should have a clear architecture, proper authentication, validation, logging, caching, and database access patterns. One popular approach is to separate the application into API, application, domain, and infrastructure layers. Entity Framework Core can be used for database access while Redis can provide caching when necessary. Authentication can be implemented using OAuth2 or OpenID Connect. Structured logging, metrics, and distributed tracing help developers understand production systems.