aspnet-core

ASP.NET Core thin controllers delegate business logic to services and use Data Transfer Objects (DTOs) for data exchange. This design enforces consistent API structure, standardizes request handling, and separates validation from routing concerns.

JWT authentication in ASP.NET Core WebAPI is implemented using secure authorization patterns with policy-based access control. This approach standardizes security across microservices and backend web services by validating tokens and enforcing user permissions globally.

Middleware ordering in ASP.NET Core determines the pipeline execution sequence for caching and global error handling. Placing error handling middleware early catches exceptions across the pipeline, while caching middleware placement impacts response performance and reliability.

FluentValidation can be used for request validation in ASP.NET Core microservices to enforce consistent data integrity. It standardizes validation rules across modular projects, ensuring that invalid requests are rejected before reaching controller logic.

Swagger or OpenAPI setup is required for ASP.NET Core backend web services to document and standardize API endpoints. This configuration enables automated endpoint discovery, client generation, and consistent API testing across microservices.

Async patterns and DTOs in ASP.NET Core API design ensure scalable, non-blocking database operations and secure data serialization. They prevent entity over-posting vulnerabilities and improve microservice reliability under high concurrent request loads.