🚀 Day 9 of My Cloud Journey: Mastering Docker Volumes, Compose & Registry
When I started learning Docker, running containers felt exciting. But very quickly, I ran into a practical question: 👉 What happens to my data when a container stops or gets deleted? That’s when I...

Source: DEV Community
When I started learning Docker, running containers felt exciting. But very quickly, I ran into a practical question: 👉 What happens to my data when a container stops or gets deleted? That’s when I realized — containers are ephemeral by design, and real-world applications need persistent storage, multi-service orchestration, and efficient image management. So today, I explored three critical Docker concepts: Volumes, Docker Compose, and Docker Registry 🐳 🧩 Why This Matters In modern cloud applications, we rarely run a single container. Instead, we deal with: Databases that must retain data Backend and frontend services running together Applications deployed across environments Handling all this manually is not scalable. Docker provides powerful solutions to simplify these challenges. 📦 1. Understanding Docker Volumes (Persistent Storage) Containers are temporary, but data should not be. Docker Volumes solve this problem by storing data outside the container lifecycle. 🔹 What I Lear