https://www.youngju.dev/blog 천천히 올바르게. AI Researcher & DevOps Engineer Youngju's tech blog. GPU/CUDA, LLM, MLOps, Kubernetes AI workloads, distributed training, and data engineering. ko fjvbn2003@gmail.com (Youngju Kim) fjvbn2003@gmail.com (Youngju Kim) Sat, 16 May 2026 00:00:00 GMT https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive.en Modern .NET in 2026 is not the work of one heir but of many small decisions stacked together. .NET 10 (Nov 2025, LTS) became the new flagship, .NET 9 (Nov 2024, STS) was short and pointed. ASP.NET Core 10 quietly held three routing styles at once (Minimal APIs, FastEndpoints, Carter), and Aspire (GA Nov 2024) brought the .NET ecosystem its first serious cloud-native orchestration. UI fractured into three lanes — Blazor United (Server + WASM + SSR + streaming), .NET MAUI, and the community-beloved Avalonia 11. We cover EF Core 9, MediatR, MassTransit, NServiceBus, NativeAOT, Roslyn analyzers, NuGet, the dotnet CLI — and Korean / Japanese real-world adoption. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetnet-9net-10csharpaspnet-coreaspireblazormauiavaloniaentity-frameworkmediatrmasstransitfastendpointsminimal-apisnative-aotroslynnuget2026deep-diveenglish https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive.ja 2026年の .NET は、一人の後継者ではなく、いくつもの小さな決定が積み重なって出来上がった結果だ。.NET 10 (2025年11月、LTS) が新しいフラッグシップになり、.NET 9 (2024年11月、STS) は短く鋭く使われた。ASP.NET Core 10 は Minimal APIs / FastEndpoints / Carter という三つのルーティングスタイルを同時に抱え、Aspire (2024年11月 GA) は .NET 陣営にとって初めての本格的なクラウドネイティブ・オーケストレーションをもたらした。UI は三つに分かれた — Blazor United (Server + WASM + SSR + streaming)、.NET MAUI、そしてコミュニティに愛される Avalonia 11。EF Core 9、MediatR、MassTransit、NServiceBus、NativeAOT、Roslyn analyzers、NuGet、dotnet CLI — そして日本と韓国の実際の採用事例まで整理する。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetnet-9net-10csharpaspnet-coreaspireblazormauiavaloniaentity-frameworkmediatrmasstransitfastendpointsminimal-apisnative-aotroslynnuget2026deep-dive日本語 https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-dotnet-9-10-aspire-blazor-maui-avalonia-fastendpoints-deep-dive 2026년의 .NET은 한 명의 후계자가 아니라, 여러 가지 작은 결정들이 모여 이룬 결과다. .NET 10 (2025년 11월, LTS)이 새로운 플래그십이 되었고, .NET 9 (2024년 11월, STS)는 짧고 굵게 사용되었다. ASP.NET Core 10은 Minimal APIs / FastEndpoints / Carter라는 세 가지 라우팅 스타일을 동시에 품었고, Aspire (2024년 11월 GA)는 .NET 진영 최초의 본격적인 클라우드 네이티브 오케스트레이션을 가져왔다. UI 쪽은 Blazor United (Server + WASM + SSR + streaming)와 .NET MAUI, 그리고 커뮤니티의 사랑을 받는 Avalonia 11이 셋으로 갈라졌다. EF Core 9, MediatR, MassTransit, NServiceBus, NativeAOT, Roslyn analyzers, NuGet, dotnet CLI — 그리고 한국·일본의 실제 채택 사례까지 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetnet-9net-10csharpaspnet-coreaspireblazormauiavaloniaentity-frameworkmediatrmasstransitfastendpointsminimal-apisnative-aotroslynnuget2026deep-dive https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive.en https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive.en .NET in 2026 is no longer a Windows-only enterprise runtime. .NET 9 stayed briefly as STS and .NET 10 took the LTS chair, C# 13 params collections and lock objects changed daily code, ASP.NET Core pulled cold start under 100ms with Native AOT, Blazor United mixed Server · WASM · SSR in a single project, MAUI 9 bundled iOS · Android · macOS · Windows behind one codebase, and Aspire 9 watched distributed apps from a single dashboard. On top of that ride EF Core 9 JSON columns, Orleans 9 virtual actors, Marten Postgres event store, and Unity 6 with C# 13 support. This article walks the entire .NET stack of 2026 — runtime, languages, web, UI, data, distributed, testing, tooling, games — in one sitting. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetcsharpfsharpaspnet-coreblazormauiaspireef-coreorleansunityenglish https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive.ja https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive.ja 2026年の .NET はもう「Windows 専用のエンタープライズランタイム」ではない。.NET 9 が STS として短期で抜け、.NET 10 が LTS として腰を据え、C# 13 の params コレクションと lock オブジェクトが日常のコードを変え、ASP.NET Core が Native AOT でコールドスタートを 100ms 以下に押し込み、Blazor United が Server・WASM・SSR を 1 プロジェクトで混ぜ、MAUI 9 が iOS・Android・macOS・Windows の 4 OS を単一コードベースで束ね、Aspire 9 が分散アプリを 1 つのダッシュボードで見る。その上に EF Core 9 の JSON 列、Orleans 9 の仮想アクター、Marten の Postgres イベントストア、Unity 6 の C# 13 対応が乗る。本稿はランタイム・言語・Web・UI・データ・分散・テスト・ツール・ゲームまで、2026年の .NET スタック全体を一気に整理する。 Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetcsharpfsharpaspnet-coreblazormauiaspireef-coreorleansunity日本語 https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive https://www.youngju.dev/blog/culture/2026-05-16-modern-dotnet-2026-net-9-csharp-13-fsharp-9-aspnet-core-blazor-maui-aspire-deep-dive 2026년의 .NET은 더 이상 윈도우 전용 엔터프라이즈 런타임이 아니다. .NET 9가 STS로 잠깐 머물다가 .NET 10이 LTS로 자리잡고, C# 13의 params 컬렉션과 lock 객체가 일상 코드를 바꾸고, ASP.NET Core가 Native AOT로 콜드 스타트를 100ms 아래로 끌어내리고, Blazor United가 서버·WASM·SSR을 한 프로젝트에서 섞고, MAUI 9가 iOS·Android·macOS·Windows 네 OS를 단일 코드베이스로 묶고, Aspire 9가 분산 앱을 한 대시보드로 본다. 그 위에 EF Core 9의 JSON 컬럼, Orleans 9의 가상 액터, Marten의 Postgres 이벤트 스토어, Unity 6의 C# 13 지원이 얹힌다. 이 글은 런타임·언어·웹·UI·데이터·분산·테스트·도구·게임까지 — 2026년의 전체 .NET 스택을 한 번에 정리한다. Sat, 16 May 2026 00:00:00 GMT fjvbn2003@gmail.com (Youngju Kim) dotnetcsharpfsharpaspnet-coreblazormauiaspireef-coreorleansunity