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Before reading this article, I hope you have a preliminary understanding of Volumes,Bind mounts and tmpfs mounts. Please refer to the following articles:

VolumesDocker data store of Docker data store tmpfs mounts of Bind mountsDocker data store

The following figure shows the difference between Volumes,Bind mounts and tmpfs mounts storage technologies:

Usage scenarios of Volumes

Share data among multiple containers. There is no guarantee that the Docker host must have a specified folder or directory structure, and Volumes can be used to shield these host differences. When you want to store data on a remote host or cloud provider. When you want to back up, restore, or migrate data from one Docker host to another Docker host, Volumes is a better choice.

Usage scenarios of Bind mounts

Share configuration files between hosts and containers. For example, save the configuration file of the nginx container on the host. After mounting it through Bind mounts, you do not have to enter the container to modify the configuration of the nginx. Share code or build output between the host and the container. For example, mount the target directory of a host project to the container, so that you can Maven build the latest product on the host machine, which can be run directly in the container without generating a new image. The file or directory structure on the Docker host is determined

Usage scenarios of tmpfs mounts

When you do not want to persist data to a container or host for security or other reasons, you can use tmpfs mounts mode.

Differences in behavior between Bind mounts and Volumes

If you mount an empty Volume to a non-empty container directory, the files in that container directory will be copied to Volume, that is, the original files in the container directory will not be overwritten by Volume. If you use Bind mounts to mount a host directory to the container directory, the original files in the container directory will be hidden so that you can only read the files in the host directory.

Reference article

Https://docs.docker.com/storage/#good-use-cases-for-tmpfs-mounts

Summary

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