IDEAS, DECISIONS & LESSONS

Journal

Notes on AI, architecture and building useful products.

21 articles

20 Sep 2025 · 4 min read

agents

I Spent a Weekend Building AI Agents. Most of Them Were Useless.

I experimented with CrewAI and LangGraph to build multi-agent workflows. Some were genuinely useful, some were expensive toys. Here's what I learned.

15 Jun 2025 · 4 min read

Our First RAG System Was Terrible (Here's What We Fixed)

We built a RAG knowledge base. The first version gave wrong answers half the time. Six months of iteration later, it actually works. Here's every lesson.

10 Feb 2025 · 4 min read

I Tried Five Vector Databases. Here's What I'd Actually Use.

We tested ChromaDB, Pinecone, Weaviate, Qdrant, and pgvector for our RAG system. Benchmarks, costs, developer experience — and the one I'd pick today.