How I Built a Self-Healing Database on a 10-Year-Old Laptop (Using Docker + Ansible) A practical experiment in resilience engineering on aging hardware—with modern DevOps tools. 🚀 Introduction Running production-grade systems on old hardware sounds like a bad idea… until you treat it as a lab. I set out to build a self-healing database system on a 10-year-old laptop —but this time with a more modern approach: 8 GB RAM SSD (thankfully!) Docker for isolation Ansible for automation The goal wasn’t raw performance. It was resilience, repeatability, and recovery . 🧠 What “Self-Healing” Meant in This Project In this setup, self-healing means: Detecting failures automatically Restarting or replacing failed components Recovering corrupted or lost state Rebuilding the system with minimal manual intervention And most importantly: Everything should be recoverable using code.…