ASP.NET Core Internals

How HTTP requests flow through the ASP.NET Core pipeline — from middleware to endpoints, with authentication, DI, and error handling along the way.

Middleware

Routing

Endpoint

Auth

Authorization

DI Container

Configuration

Model Binding

Filters

Logging

API Versioning

Error Handling

Request Pipeline

How the middleware chain processes every HTTP request — ordering, branching, and short-circuiting.

Route matching, attribute routing, minimal APIs, and endpoint metadata.

Security

JWT, Cookie, OAuth2 flows, claims-based identity, and policy-based authorization.

Services

Constructor injection, service scopes per request, Singleton vs Scoped vs Transient.

appsettings.json, IOptions pattern, secrets management, and environment overrides.

ILogger pipeline, structured logging, OpenTelemetry, and distributed tracing.

Request Processing

How request data maps to C# objects and validates them.

Pipeline interception — authorization, resource, action, exception, and result filters.

URL, query string, and header-based versioning strategies.

RFC 7807 structured errors, global exception handling, and Problem Details.

Cookie preferences

We use essential cookies for sign-in and preferences. With your permission, we also use basic analytics to improve lessons.