Insights for Modern Developers

You do not need more Linux commands. You need to use the ones you already know under pressure without guessing. This field guide covers grep, find, xargs, curl, top, htop, df, and du with production-first workflows.

Caching looks simple until production breaks. These are the real engineering lessons: how to choose what to cache, how to invalidate it, and when not to cache at all.

RAG looks embarrassingly simple in demos. In production, it is a completely different beast. This is a no-fluff guide to building retrieval-augmented generation systems that actually hold up under real workloads, real data, and real users.

You don't need the cloud to run AI anymore. This guide walks you through the easiest ways to get a local AI model running on your machine in under 15 minutes.

Passwords, tokens, sessions, OAuth... authentication is everywhere, yet most developers only half-understand it. This is the guide I wish I had when I started. Every method, every flow, every trade-off, explained with diagrams and real code.

Slow queries don't announce themselves — they creep in quietly and wreak havoc at scale. This deep-dive covers the SQL performance mistakes that quietly kill production systems, with real query examples and battle-tested fixes.