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Can a Lemmy instance be configured to only permanently store posts made by users on the local instance, and posts to communties that are on the local instance? (lemmy.world)

submitted 1 year ago by [email protected] to c/[email protected]

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I have been trying to understand how the caching of content from other Lemmy instances works. From what I have gathered, the local Lemmy instance will automatically download and store posts made to any communities that are followed by users on the local instance.

To me, this seems somewhat unsustainable in the long term - I am aware of the fact that it's only storing the text of the posts, and not any media. I'm curious if it's possible to configure the local instance to only cache the stored data for a certain amount of time (it might be better to just periodically purge the entire cache with a cronjob, or something); however, the data that I would like to store permanently is posts to any other community by users on the local instance, as well as posts made to communities on the instance (I have a suspicion that the communites data is permanently stored by default).

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[–] [email protected] 15 points 1 year ago (2 children)

As far as I know Lemmy stores only text locally and images and such will be linked to the external instance. Text doesn't use much disk space, so that shouldn't be a big a problem. Sometimes when you browse Lemmy, you notice posts that have broken links to images. It's because the other instance is down, but you can still see the text portion of the posts on your home instance.

[–] [email protected] 6 points 1 year ago

I think it stores thumbnails in the pictrs directory by default.

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