How to clean memory cache by docker

To clean the Docker memory cache, you can follow these steps: Use the docker system prune command to automatically clean caches, images, containers, and volumes. Use the docker image prune command to delete unused images. Use the docker container prune command to delete stopped and unused containers. Use the docker volume prune command to delete unused volumes. Use the docker-clean tool for finer cache cleaning. Adjust Docker memory limits to increase the amount of allocated memory. Perform these steps regularly and use monitoring tools or Cron to do it

How to clean Docker memory cache

Docker uses caches to optimize its operations, but over time, the cache may grow and consume a lot of memory. Here are the steps that help clean Docker memory cache:

1. Use docker system prune command

docker system prune command automatically cleans up Docker caches, including images, containers, volumes, and networks. It frees disk space and memory by deleting items that are no longer in use. To run this command, enter:

 <code class="bash">docker system prune</code>

2. Delete unused images

Unused images can take up a lot of disk space and memory. Regularly use the docker image prune command to delete unused images:

 <code class="bash">docker image prune</code>

3. Delete unused containers

Unused containers can also consume memory. Use docker container prune command to delete the stopped and no longer needed container:

 <code class="bash">docker container prune</code>

4. Delete unused volumes

Unused volumes can also consume memory. Use docker volume prune command to delete unused volumes:

 <code class="bash">docker volume prune</code>

5. Use docker-clean tool

Docker-clean is a third-party tool that provides finer cache cleaning options. It can delete specific content in images, containers, volumes, and networks. To install docker-clean, follow the instructions on its GitHub page.

6. Adjust Docker memory limits

If Docker memory usage is high, you can increase the amount of memory allocated to Docker. In the /etc/docker/daemon.json configuration file, find memory-swap and memory-limit parameters and increase their values ​​as needed.

Regular maintenance

To prevent the Docker cache from growing too much, it is important to perform these cleanup steps regularly. You can set up a Cron job or use monitoring tools to automate this process.

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