Articles and tutorials
everything I learn while building with .NET
This is where I write about what I learn while working with .NET, ASP.NET Core, EF Core, Docker, AWS, and Claude Code. I explain each topic step by step, and most articles come with source code on GitHub that you can clone and run yourself.
173 articles · browse by category
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37–48 of 173-
dotnet webapi-courseCustom User Management in ASP.NET Core Web API (.NET 10)
Build a user-management layer in ASP.NET Core Web API: a custom user model, admin endpoints to list, lock, and role-manage users, and self-service profiles.
Jul 16, 2026 · 13 min read → -
dotnet webapi-courseFastest Way to Bulk Insert Thousands of Rows in EF Core
Benchmark the fastest way to bulk insert thousands of rows in EF Core 10 - AddRange vs EFCore.BulkExtensions vs SqlBulkCopy and Npgsql COPY, with real numbers.
Jul 13, 2026 · 17 min read → -
dotnet webapi-courseIdentity API Endpoints in ASP.NET Core: When to Use Them (.NET 10)
MapIdentityApi gives you register, login, and refresh for free in .NET 10. Here is exactly when to use Identity API endpoints and when to roll your own.
Jul 7, 2026 · 14 min read → -
dotnet webapi-courseEF Core Interceptors: The Complete Guide (.NET 10)
Learn EF Core interceptors in .NET 10 - all 7 types, how to register them, and how to add audit fields, soft deletes, and the current user without breaking dependency injection.
Jul 5, 2026 · 14 min read → -
dotnet webapi-courseBulk Operations in EF Core 10 - Benchmarking Insert, Update, and Delete Strategies
Learn how to optimize bulk insert, update, and delete operations in EF Core 10. We benchmark 5 approaches with real numbers and a decision matrix for every scenario.
Updated Jul 1, 2026 · 17 min read → -
dotnet webapi-courseRESTful API Best Practices for .NET Developers (.NET 10) – The Complete 2026 Guide to Production-Ready APIs
Build production-grade REST APIs in .NET 10. Resource naming, HTTP methods, status codes, versioning, idempotency, RFC 9457 Problem Details, caching, and concurrency - done right.
Updated Jun 24, 2026 · 30 min read → -
dotnet webapi-coursePolicy-Based Authorization in ASP.NET Core - A .NET 10 Guide
Build policy-based authorization in ASP.NET Core .NET 10 - requirements, handlers, AddAuthorizationBuilder, IAuthorizationRequirementData, fallback policies.
Jun 23, 2026 · 13 min read → -
dotnet webapi-courseIHostedService vs BackgroundService in .NET 10: Which to Use
IHostedService vs BackgroundService in .NET 10. Side-by-side code, 5 production gotchas, decision matrix, and when to reach for Hangfire instead.
Updated Jun 22, 2026 · 19 min read → -
dotnet webapi-courseClaims-Based Authorization in ASP.NET Core - A .NET 10 Guide
Master claims-based authorization in ASP.NET Core .NET 10 - ClaimsPrincipal anatomy, custom JWT claims, RequireClaim checks, and claims transformation.
Jun 21, 2026 · 13 min read → -
dotnet webapi-courseRole-Based Authorization in ASP.NET Core - A .NET 10 Guide
Implement role-based authorization in ASP.NET Core .NET 10 - add roles to JWTs, protect Minimal API endpoints with RequireRole, and fix roles that won't map.
Jun 17, 2026 · 13 min read → -
dotnet aws +1Essential AWS Services Every .NET Developer Should Master in 2026
A practical 2026 guide to the AWS services every .NET developer should know - compute, storage, databases, messaging, security, and AI - now with .NET 10 Lambda support.
Updated Jun 16, 2026 · 20 min read → -
dotnet awsWorking with AWS S3 using ASP.NET Core (.NET 10) - Upload, Download & Delete Files
Learn how to upload, download, and delete files in AWS S3 using ASP.NET Core and .NET 10 with AWS SDK V4, Minimal APIs, presigned URLs, and IAM best practices.
Updated Jun 13, 2026 · 16 min read →