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Bad configuration should crash your app at startup, not deep in a request. Learn how to validate configuration in ASP.NET Core with Data Annotations and FluentValidation, and fail fast with ValidateOnStart. Data Annotations vs FluentValidation: when to use each for configuration validation.
System design is a chain of trade-offs, not just patterns to memorize: CAP and consistency, SQL vs NoSQL, sharding, caching, queues, monolith vs microservices.
18 REST API security best practices in ASP.NET Core - HTTPS, JWT validation, authorization policies, rate limiting, CORS, secrets, security headers, and more - each with C# code you can apply today.
Azure Event Grid vs Event Hubs in .NET: learn how each works, how they differ from Azure Service Bus, how to publish and handle events in C#, and exactly when to use each.
Build a complete CI/CD pipeline for .NET with GitHub Actions - run unit and integration tests, publish a NuGet package, build a Docker image that runs tests, manage secrets, and push to the container registry.
Slow queries drag down every app. Learn 20 proven techniques to optimize SQL queries in PostgreSQL - indexes, covering indexes, sargable filters, smarter joins, materialized views, functions in where, pagination techniques, improve joins, choose correct join type, improve subqueries, improve transactions. And when to trust the query planner.
A step-by-step guide to using EF Core with Azure SQL Database - create the database in Azure Portal, connect and run migrations, add transient-fault resilience, and switch to passwordless Microsoft Entra authentication.
Pass any .NET interview in 2026 with this complete step-by-step roadmap. Learn how to define your target level and find your gaps, master the full technical map (C#, async and memory, ASP.NET Core, EF Core, security, architecture, and reliability), build a portfolio that proves senior thinking, turn your GitHub into a real portfolio, make LinkedIn bring interviews to you, and win the interview itself - everything you need to land a senior .NET role.
Stop pasting the same instructions into every AI session. Learn how to create Claude skills for .NET (also works for Codex, Copilot and Cursor) - reusable, on-demand instruction packs that teach AI your project's conventions. Create modules, services, features in Verticali Slices, Clean Architecture and N-Layered Architecture. How to crete endpoints, where to put application code, repositories, entitites, event consumers and publishers, gRPC, GraphQL. Plus the official .NET skills published by Microsoft.
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