beginner~4h
Storage: Volumes, Bind Mounts & tmpfs
Container filesystems are ephemeral by design — the writable layer disappears with the container. Docker provides three mechanisms for data that needs to outlive a container or be shared with the host
Learning objectives
- Explain why a container's own writable layer is the wrong place for data that needs to outlive the container.
- Distinguish named volumes, bind mounts, and tmpfs mounts by who manages them and where the data actually lives.
- Choose the correct storage option for a given real scenario, and justify the choice.
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Storage: Volumes, Bind Mounts & tmpfs