Rebuilding multi-stage Docker images on every code change wastes minutes and cache. How to decouple build dependencies from runtime containers for instant feedback.

Learn how to build production-ready Python background workers that scale under load. Covers worker pools, queue architecture, retry strategies, idempotency, and graceful shutdown.

Aider is my favorite AI coding assistant. It lives in the terminal, commits directly to Git, and actually understands my codebase. But it was missing one thing: the ability to save and restore chat sessions. So I built it. The PR never got merged, but I've been running my fork for months now. Here's the story.