自托管REST服务：Microsoft.Owin与AspNetCore的适用场景问询
First, a quick clarification to address your SignalR confusion: Modern SignalR fully supports ASP.NET Core natively—the version tied to Microsoft.Owin is the legacy SignalR for .NET Framework. If you're building on .NET Core/.NET 5+, you can absolutely add SignalR to your ASP.NET Core REST API without touching Owin at all. That aside, let’s dive into why ASP.NET Core is the better pick for self-hosted REST services when you don’t need that legacy Owin-based SignalR:
Unified, Modern Stack: ASP.NET Core is a complete, cross-platform framework built from scratch for modern web development. Owin was a middleware standard for .NET Framework, but it’s effectively a legacy tech now. With ASP.NET Core, you get one cohesive stack for web APIs, MVC, SignalR, Blazor, and more—no need to juggle separate Owin pipelines or messy configurations.
True Cross-Platform Compatibility: Unlike Owin (which was tightly coupled to Windows and .NET Framework), ASP.NET Core runs flawlessly on Windows, Linux, and macOS. For self-hosted services, this means you can deploy to lightweight Linux containers, VMs, or even serverless environments without compatibility hoops to jump through.
Superior Performance: ASP.NET Core is optimized for speed and scalability. It uses a lean, modular middleware pipeline, has a smaller memory footprint, and natively supports async/await across the entire stack. Benchmarks consistently show it outperforms Owin-based services in throughput and latency, especially under heavy load.
Active Development & Long-Term Support: Microsoft has shifted all its web development focus to ASP.NET Core. Owin hasn’t seen meaningful updates in years, and security patches or bug fixes are few and far between. ASP.NET Core gets regular feature updates (like minimal APIs, top-level statements, and improved hosting models) and LTS releases, so your self-hosted service will stay secure and relevant for years.
Simpler Setup & Tooling: ASP.NET Core has a streamlined configuration system (using
appsettings.json, environment variables, etc.) and integrates seamlessly with modern .NET tooling (thedotnetCLI, Visual Studio, Rider, etc.). Owin requires more boilerplate to get a self-hosted service up and running, and its tooling ecosystem is outdated compared to what ASP.NET Core offers.Built-In Dependency Injection: ASP.NET Core comes with robust, native dependency injection (DI) that’s deeply integrated into every part of the framework. Owin forces you to rely on third-party DI containers (like Autofac) for similar functionality, adding unnecessary complexity to your self-hosted service.
Future-Proof Your Codebase: As Microsoft continues to invest in ASP.NET Core, Owin will only become more obsolete. Building your self-hosted REST service on ASP.NET Core ensures you can easily adopt new features, integrate with other modern .NET technologies, and avoid a full rewrite down the line when Owin is no longer supported.
Again, if you need SignalR with your self-hosted service, you don’t have to switch to Owin—just use the Microsoft.AspNetCore.SignalR package, which is fully integrated with ASP.NET Core.
内容的提问来源于stack exchange，提问作者Owiner
