How does Lemmy/Mastodon/Fediverse store videos and images?

Blurker@programming.dev to Asklemmy@lemmy.ml – 101 points –

As I was browsing lemmy and the fediverse at large, this question kept popping into my head.

Since multimedia files have a much bigger footprint than raw text, it made me feel worried since as time goes, massive resources will be needed to keep up with the big data coming in.

I do wonder if the instances have taken the route of the cloud and just decided to put all of it in something like AWS S3? Or maybe they use self hosted storage with something like minio for object storage?

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That sounds good for reliability since an instance can still lookup posts even if another fails.

For videos and images, do they store them as blobs in the database or do they use something more catered to files like object storage or maybe a regular filesystem with metadata on a database?