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What does "Docker volume" mean in programming?

Docker volume is one of the most common terms in software development. This guide explains what it means, how it is used in practice, and why it matters, with real examples from the developer world.

Definition

A persistent storage area managed by Docker, independent of the container lifecycle. Volumes survive container restarts and removals and are the preferred way to persist database data or shared files between containers.

Example

"We mount a Docker volume so the database data survives container restarts."

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