Remigiusz ZalewskiRemigiusz Zalewski

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Recent Posts

Stop Using HasData for All Your Data Seeding in .NET

Stop Using HasData for All Your Data Seeding in .NET

Most projects push every row through HasData and end up with fake data in migrations or empty production tables. Here is when to use HasData, UseSeeding and your own seeder class - all three in one EF Core 10 app.

Run Claude Code for FREE with Ollama

Run Claude Code for FREE with Ollama

Run Claude Code against a local AI model on your own PC - free, private and offline. Install Ollama, pick a model for your hardware, fix the context length, and connect it with ollama launch claude.

RAG Explained in 7 Minutes

RAG Explained in 7 Minutes

Why AI models hallucinate and the one idea that fixes it in almost every production AI system - Retrieval-Augmented Generation. Chunking, embeddings, vector search, prompt augmentation, and the four places RAG breaks.

Build Your First MCP Server in .NET with EF Core

Build Your First MCP Server in .NET with EF Core

Claude can write C# but has no idea what's in your database until you give it a way to ask. Build your first MCP server in .NET 10 with EF Core and SQL Server, expose three tools, and use it from Claude Desktop and MCP Inspector.

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