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Field notes on building real software
Direct, practical answers to the questions that come up when you build full-stack apps, RAG systems, and AI-powered products.
RAG·7 min read
RAG vs Fine-Tuning vs Long Context: When to Use Each
Use RAG for knowledge that changes, fine-tuning for behaviour and style, and long context for prototypes or whole-document tasks. Here is how to decide.
Read guideAI Products·6 min read
How to Add an AI Chatbot to an Existing Web App
Add an AI chatbot as a bolt-on: put the LLM behind its own service, ground it in your data with RAG if needed, stream responses, and add fallbacks.
Read guideFull-Stack·7 min read
Next.js + FastAPI: A Full-Stack Architecture That Scales
Run Next.js and FastAPI as two services talking over a JSON REST API. Use Next.js for the UI and light edge logic, FastAPI for heavy Python and AI work.
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