Docker Networking & Volumes
Containers are ephemeral; your data shouldn't be.
Volumes & Persistence
- Named Volumes: Managed by Docker, best for databases and persistent app state.
- Bind Mounts: Direct host-to-container mapping, best for development code.
Internal Networking
- User-Defined Bridges: Created isolated networks for containers to talk to each other via service names (DNS).
- Aliases: Give containers multiple network identities.
Best Practices
- External Networks: Avoid using the default "bridge" network for production.
- Volume Backups: Regularly back up persistent volumes.