# Using multiple containers - what needs to be shared?

**URL:** https://meta.discourse.org/t/using-multiple-containers-what-needs-to-be-shared/181736
**Category:** Self-hosting
**Created:** [March 3, 2021, 9:26am UTC](https://meta.discourse.org/t/using-multiple-containers-what-needs-to-be-shared/181736 "2021-03-03T09:26:39Z")
**Posts on this page:** 1
**Showing post:** 2

<div class="post-metadata">

### Author: ![pfaffman](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/pfaffman/32/120154_2.png) [@pfaffman](https://meta.discourse.org/u/pfaffman)
#### Post date: [March 3, 2021, 12:32pm UTC](https://meta.discourse.org/t/using-multiple-containers-what-needs-to-be-shared/181736/2 "2021-03-03T12:32:46Z")

</div>

It’s the database and redis. You want to serve the images from s3, so you don’t need shared disk. I believe that cdck served images and assets locally some years ago, but S3 for static assets is what they’re doing now. See [Using Object Storage for Uploads (S3 & Clones)](https://meta.discourse.org/t/using-object-storage-for-uploads-s3-clones/148916). You’ll also want two CDNs,one for Discourse and one for S3.

---

_[View the full topic](https://meta.discourse.org/t/using-multiple-containers-what-needs-to-be-shared/181736)._