ASP.NET Core / Basic: HTTP and Application Composition

ASP.NET Core โ€” Basic: HTTP and Application Composition

Build clear request, endpoint, controller, and dependency contracts.

6 lessons ยท No account required

What you will learn

  • Explain the host/pipeline boundary.
  • Design routing and endpoint input/output behavior.
  • Use DI lifetimes with explicit ownership.

  1. Hosting and the HTTP Contract

    Separate the host, server, request pipeline, and application contract before building an endpoint.

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  2. Middleware Order and Error Boundaries

    Explain forward request flow, reverse response flow, short-circuiting, and response commitment before composing cross-cutting behavior.

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  3. Routing and Endpoint Selection

    Keep route matching, HTTP method selection, binding, domain validation, and authorization as separate decisions.

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  4. Minimal API Binding and Results

    Define input sources, DTO meaning, validation, and typed response choices without mistaking a compact handler for a complete API contract.

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  5. Controllers and MVC API Contracts

    Use controller conventions, model state, action results, and filters while keeping direct action tests distinct from framework execution.

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  6. Dependency Injection and Lifetimes

    Choose construction, sharing, scope, and disposal from the operationโ€™s ownership rather than from registration convenience.

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