# pull through cache

A pull-through cache retrieves images from an upstream container registry, stores them locally, and serves subsequent requests from the cache.

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## How to use multiple Docker registry mirrors

DevFeed: [How to use multiple Docker registry mirrors](<https://devfeed.tech/articles/how-to-use-multiple-docker-registry-mirrors-26642.md>)

Original publisher: [Read original article](<https://blog.alexellis.io/how-to-configure-multiple-docker-registry-mirrors/>)

Author: Alex Ellis

Published: 2023-06-08T13:27:06Z

Content type: tutorial

Language: en

Sources: [Alex Ellis' Blog](<https://devfeed.tech/sources/alex-ellis-blog.md>)

Topics: [Docker](<https://devfeed.tech/topics/docker.md>), [docker registry](<https://devfeed.tech/topics/docker-registry.md>), [pull through cache](<https://devfeed.tech/topics/pull-through-cache.md>), [Self-hosted](<https://devfeed.tech/topics/self-hosted.md>), [GitHub Actions](<https://devfeed.tech/topics/github-actions.md>), [Firecracker](<https://devfeed.tech/topics/firecracker.md>)

Tags: [buildx](<https://devfeed.tech/tags/buildx.md>), [cache](<https://devfeed.tech/tags/cache.md>), [container](<https://devfeed.tech/tags/container.md>), [container-registry](<https://devfeed.tech/tags/container-registry.md>), [docker](<https://devfeed.tech/tags/docker.md>), [docker-registry](<https://devfeed.tech/tags/docker-registry.md>), [firecracker](<https://devfeed.tech/tags/firecracker.md>), [github-actions](<https://devfeed.tech/tags/github-actions.md>), [how-to](<https://devfeed.tech/tags/how-to.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [linux](<https://devfeed.tech/tags/linux.md>), [mirror](<https://devfeed.tech/tags/mirror.md>), [registries](<https://devfeed.tech/tags/registries.md>), [registry](<https://devfeed.tech/tags/registry.md>), [self-hosted](<https://devfeed.tech/tags/self-hosted.md>)

### AI overview

This tutorial explains why self-hosted GitHub Actions runners can hit Docker Hub's anonymous image pull limits and how a Docker registry configured as a pull-through cache can help. It covers configuring Docker and buildx to use multiple registry mirrors, including considerations for local HTTP and Internet-facing HTTPS setups.

### Source excerpt

Why would you need to use a mirror for a container registry? And is there a way to use two or more? Find out from the actuated team.