Prompt

Do I need persistent volumes for a Docker app?

Technology / Cloud Infrastructure1 observationLast seen Oct 7, 2026

Latest observation

Oct 7, 2026OpenAI APIWeb search: off

Not always.

You need a persistent volume in Docker only if your app must keep data after a container is removed, recreated, or updated.

Use a persistent volume if your app stores:

  • databases or other stateful data
  • user uploads
  • config files that should survive restarts
  • logs you want to retain
  • caches you don’t want lost between container rebuilds

You usually do not need one if your app is:

  • stateless
  • can recreate all data on startup
  • only serves code/static assets
  • fine with losing data when the container is deleted

Common examples

  • Need volume: PostgreSQL, MySQL, Redis with persistence, file uploads
  • No volume needed: a simple web frontend, API server with no local storage

Rule of thumb

If the data matters and should survive docker rm, docker compose down, image rebuilds, or crashes, use a volume.

If you want, I can help you decide for your specific Docker app.

Observation history

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