Upgrade .NET 8 to .NET 10 Without Breaking Your API Contract
If I need to upgrade .NET 8 to .NET 10 , I treat the work as an API contract migration, not a project-file edit. A service can compile, pass unit test…
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What a .NET Core service needs before it's actually production-ready
Health checks. Structured logging. Retry policies with jitter. Everyone who writes a "production readiness checklist" for a .NET Core service reaches …
Optimizing API Latency in C# .NET Applications
API latency plays a crucial role in performance and user experience. High latency frustrates users, reduces scalability, and increases infrastructure …
Shared UI Means Shared Contracts, Not Shared Hosts
A component can compile in a shared assembly and still be impossible to construct in one of the applications that renders it. That is easy to miss whe…
BenchmarkGate, Part 2: Why a Baseline Isn't Enough
In part one , I introduced BenchmarkGate — a local-first performance regression gate for BenchmarkDotNet. v0.1.0-alpha.1 could do one thing: compare a…
Fast at Lunch. Slow at Scale: Why Your App Gets Slow When Real Data Arrives
A page that feels instant with a few users can become painfully slow when your business grows. The code hasn’t changed. The server hasn’t changed. The…
Deploying a .NET Core API for Free in 2026: Railway vs Render vs Fly.io vs Cloudflare Tunnel
Why this comparison When I started building Sa, a car comparison platform for the Indian market, I had a working .NET Core Web API with MongoDB runnin…
Как я посадил WireMock.Net на gRPC стероиды
WireMock.Net умеет мокать gRPC . Но для этого он заставляет разработчика таскать .proto файлы и поддерживать лишнюю конфигурацию. Я контрибьютил в про…
I ported a knowledge-format (OKF) library to zero-dependency .NET — here's what I learned
If you can cat a file, you can read the knowledge base. If you can git clone a repo, you can ship it. No vector database to stand up, no proprietary e…
Fingerprint Verification in ASP.NET Core with SourceAFIS (1:1 Matching)
Sooner or later a backend has to answer a hard question: is this fingerprint the same person we enrolled earlier? An attendance system, a KYC check, a…
When to Rebuild vs When to Refactor: A Decision Framework for Founders
At some point in the life of almost every growing product, the team has a version of the same conversation. The codebase is causing pain. Features are…
MCP Deep Dive, Part 12: Building MCP Servers in C# and .NET 9 — The SDK, DI, and Native AOT
We've built servers, clients, tools, auth, and governance across this series — all in C#, without ever slowing down to look at how the .NET tooling ma…
When the disk fills up: pressure and tenant isolation in Squirix preview.7
In my preview.6 article , I wrote about what happens after a write is accepted: binary WAL frames, group commit, crash recovery, and durable retries. …
Navigation Is a Commit Marker: Handling Partial Success in Blazor
Navigation looks harmless because it sits at the edge of the code: call a method, change the route, and continue the journey. But a redirect is not me…
How to Configure keyVaultReferenceIdentity in Azure App Service?
Overview This guide shows you how to fix a critical Azure App Service configuration issue where the keyVaultReferenceIdentity property is hidden from …
Balancing Peak-Load Scaling and User Experience with CQRS
At 4:30 PM every Friday, thousands of field workers on remote construction sites log off and submit their weekly hours, safety checklists, and equipme…
I Built a CLI to Use Free Web-Based AI Chatbots for Real Development Work — No API Keys, No Extensions
I wanted to use web-based AI chatbots — Claude, Gemini, ChatGPT, Qwen — for actual development work, not just Q&A. The free tiers are generous, an…
building enterprise multi-agent workflows in .net with mistral
most people know Mistral for its chat models. the part i find more interesting for enterprise work is the Agents API : persistent agents with instruct…
С телефона в Альпах в Microsoft Store за две недели: нативный GUI для PostgreSQL через облачный Claude Code
10 лет в .NET, отпуск в Альпах и pgAdmin, который меня достал. Начало июля, горный воздух, а в голове рабочая фрустрация. Ну сколько можно ждать по 30…
Extension Blocks in C# 14 Are More Than New Syntax
Extension methods have been part of C# for years. Extension blocks finally make them feel like a small, organized API. Extension methods are one of th…
Nothing Crashed. Nothing Errored. My CPU Sat at 390% for an Hour.
This is a submission for DEV's Summer Bug Smash: Smash Stories powered by Sentry . A user uploaded a 106-page PDF and clicked "Ask this book". The scr…
Building a Custom Modbus TCP Client in .NET: What a Production-Grade Poller Actually Needs
Most Modbus tutorials in .NET end at the same place: install a library, call ReadHoldingRegisters , print a number. That is enough to prove a device i…
What happens after a write? Reworking Squirix's WAL in preview.6
In my first Squirix article , I wrote about why Squirix keeps a strict boundary between the client and the server. Applications use a typed client ove…
EF Core Migration Bundles: What They Are & Why They Matter
TL;DR A migration bundle packages every pending migration for one DbContext into a single, runtime-targeted executable. No source code or dotnet-ef to…
Astro + Cloudflare Pages vs WordPress - A Technical Comparison for Modern Static Sites
1. Introduction In 2026, many teams still default to WordPress when building blogs or marketing sites, often without fully considering the architectur…
Fuse v4.2, an open source MCP/CLI tool to speed up Claude Code on C# codebases
Fuse 4.2 is an open source .NET global tool that runs as an MCP server or from the command line. I built Fuse after watching coding agents repeatedly …
.NET 8 and .NET 9 Both Die on November 10 - Yes, the LTS Too
Originally published at endoflife.ai . Here's a date collision that surprises people: .NET 8 and .NET 9 reach end of support on the same day — Novembe…
EF Core Mapping for DDD — for Dummies
You built a nice domain model with rules and private properties — but EF Core wants simple classes with public get; set; . Don't worry. This guide sho…
SDLC in the AI Era with Spec-Driven Development
AI can generate an endpoint, a test fixture or a deployment manifest in seconds. That speed is useful, but it does not solve the expensive part of sof…
What is OpenIddict: the .NET framework developers choose for OAuth 2.0 and OpenID Connect
I've been writing a short series on OpenIddict basics while preparing IdentitySuite's v3.0 release — here's part 1. The .NET framework developers choo…