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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? (self.selfhosted)

submitted 1 year ago by Kalcifer to c/selfhosted

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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] 6 points 1 year ago

May be worth having a look at the ActivityPub protocol. It’s the way Lemmy instances (and other stuff!) communicate with one another. From there I think it will be clearer how a single Lenny instance could behave. https://activitypub.rocks