Milan Pantelić https://pantelicmilanblog.pages.dev/en/en Software engineer writing about code, systems and the things in between. en Hello, MDX https://pantelicmilanblog.pages.dev/en/en/blog/hello-mdx https://pantelicmilanblog.pages.dev/en/en/blog/hello-mdx Thu, 01 Oct 2026 00:00:00 GMT How this blog works, and a tour of the building blocks every post can use. Software Engineering Meta Evaluating LLM output without vibes https://pantelicmilanblog.pages.dev/en/en/blog/demo-llm-evals https://pantelicmilanblog.pages.dev/en/en/blog/demo-llm-evals Mon, 28 Sep 2026 00:00:00 GMT Build a small eval harness before you touch the prompt. AI Engineering LLM RAG basics: chunking and retrieval https://pantelicmilanblog.pages.dev/en/en/blog/demo-rag-basics https://pantelicmilanblog.pages.dev/en/en/blog/demo-rag-basics Thu, 24 Sep 2026 00:00:00 GMT Why most RAG failures are retrieval failures. AI Engineering Database Design RAG Designing indexes for real queries https://pantelicmilanblog.pages.dev/en/en/blog/demo-index-design https://pantelicmilanblog.pages.dev/en/en/blog/demo-index-design Tue, 22 Sep 2026 00:00:00 GMT Start from the query plan, not from the columns. Database Design Performance Type narrowing in TypeScript https://pantelicmilanblog.pages.dev/en/en/blog/typescript-narrowing https://pantelicmilanblog.pages.dev/en/en/blog/typescript-narrowing Sun, 20 Sep 2026 00:00:00 GMT Let the compiler prove what a value is, instead of casting your way past it. Software Engineering TypeScript Prompt caching and latency https://pantelicmilanblog.pages.dev/en/en/blog/demo-prompt-caching https://pantelicmilanblog.pages.dev/en/en/blog/demo-prompt-caching Fri, 18 Sep 2026 00:00:00 GMT Cut cost and time-to-first-token by reusing the prefix. AI Engineering Performance HTTP caching headers that matter https://pantelicmilanblog.pages.dev/en/en/blog/demo-http-caching https://pantelicmilanblog.pages.dev/en/en/blog/demo-http-caching Sat, 12 Sep 2026 00:00:00 GMT Cache-Control, ETag and when to ignore the rest. Software Engineering Performance SQL or NoSQL? Ask about access patterns https://pantelicmilanblog.pages.dev/en/en/blog/demo-sql-vs-nosql https://pantelicmilanblog.pages.dev/en/en/blog/demo-sql-vs-nosql Thu, 10 Sep 2026 00:00:00 GMT Category is spelled lowercase on purpose. Database Design postgres A deliberately long title that keeps going to see how cards, headers and the browser tab cope with it on a narrow phone screen https://pantelicmilanblog.pages.dev/en/en/blog/demo-long-title https://pantelicmilanblog.pages.dev/en/en/blog/demo-long-title Sat, 05 Sep 2026 00:00:00 GMT A very long description. A very long description. A very long description. A very long description. A very long description. A very long description. A very long description. A very long description. Software Engineering Architecture