https://aidiwas.com Learn AI engineering in public. en-us https://aidiwas.com/blog/postgres-for-ai-apps-a-practical-primer https://aidiwas.com/blog/postgres-for-ai-apps-a-practical-primer Sun, 26 Jul 2026 00:00:00 GMT Why Postgres — with pgvector — is often the only database an AI app actually needs, and where it starts to strain. https://aidiwas.com/blog/getting-started-with-pydantic-for-llm-outputs https://aidiwas.com/blog/getting-started-with-pydantic-for-llm-outputs Fri, 24 Jul 2026 00:00:00 GMT Why raw text out of an LLM is a liability, and how Pydantic models turn it into something your code can actually trust. https://aidiwas.com/blog/building-a-typed-mdx-content-engine https://aidiwas.com/blog/building-a-typed-mdx-content-engine Wed, 22 Jul 2026 00:00:00 GMT How this site reads blog posts straight from the filesystem at build time — no database, no CMS, fully typed. https://aidiwas.com/blog/what-is-rag-and-why-it-matters https://aidiwas.com/blog/what-is-rag-and-why-it-matters Mon, 20 Jul 2026 00:00:00 GMT Retrieval-Augmented Generation in plain terms — what it actually does, when it's worth the added complexity, and when it isn't.