Docker Volumes Explained: Your Data NEVER Dies! (Persistence Demo with PostgreSQL)

🐳 Ever lost ALL your database data just because you ran "docker compose down"? In this video, I'll show you EXACTLY why that happens — and how Docker Named Volumes fix it permanently. We build a real full-stack app (Node.js + PostgreSQL) from scratch and run through a live demo so you can SEE the difference between data loss and data persistence with your own eyes. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⏱️ TIMESTAMPS ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 00:00 - Intro: The problem with Docker data 01:30 - Project overview: BookShelf app (Node.js + PostgreSQL) 03:00 - DEMO 1: Without volumes → data vanishes after container delete 06:00 - Docker volume creation & inspection (docker volume inspect) 09:00 - DEMO 2: With named volumes → data survives container deletion 13:00 - How volumes work under the hood (/var/lib/docker/volumes/) 15:30 - Volume backup & cleanup commands 17:00 - Recap & what to learn next ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📦 WHAT YOU'LL LEARN ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✅ Why Docker containers lose data on deletion ✅ What Docker Named Volumes are and how they work ✅ How to create, inspect, and manage volumes ✅ The difference between bind mounts vs named volumes ✅ How to persist PostgreSQL data across container restarts ✅ Volume backup and cleanup strategies ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔧 TECH STACK ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ - Docker + Docker Compose - PostgreSQL 15 - Node.js + Express - Named Volumes (local driver) ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📂 SOURCE CODE ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ⭐ GitHub:https://github.com/anulsasidharan/BookShelf-Persistant-docker-volume ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 🔑 KEY COMMANDS IN THIS VIDEO ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ docker volume create bookshelf_postgres_data docker volume inspect bookshelf_postgres_data docker volume ls docker compose up -d docker compose down docker compose down --volumes ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 📺 MORE FROM ORIONVEXA ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ 💼 LinkedIn: https://linkedin.com/in/anulsasidharan 🐙 GitHub: https://github.com/anulsasidharan ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ If this helped you, drop a ⭐ on the repo and smash that SUBSCRIBE button — more DevOps and AI engineering content dropping every week! #Docker #DevOps #DockerVolumes #PostgreSQL #DockerCompose #CloudNative #Kubernetes #ContainerDevops #LearnDocker #BackendDevelopment #NodeJS #DatabasePersistence #DockerTutorial #SoftwareEngineering #CloudComputing #TechTutorial #CodingForBeginners #DevOpsEngineer #OrionVexa #Linux #OpenSource #AWS #Programming #Python #WebDevelopment