you may want to redact the names as this spam is framing another person pretending to be originating from them

so all you're looking for is the amount of activities generated per instance?

that is only a small subset of the data currently collected, most of the storage use currently comes from collecting information in relation to other instances.

Hi, I run this.

What benefit do you expect from longer retention periods and how much time did you have in mind?

The way data is currently collected and stored keeps the same granularity for the entire time period, which currently uses around 60 GiB for a month of retention across all monitored instances.

this is a lemm.ee limitation, not a Lemmy limitation, so this is the wrong community.

if you look at the instance sidebar at https://lemm.ee/ you can see that it's 4 weeks.

Retaining old content has value

this 100%. this is exactly why i wouldn't recommend any communities to be removed if there is still content in there, worst case just lock it.

cleaning up communities doesn't make lemmy more active either. it may help to make active communities stand out more against inactive ones though.

cleaning up dead communities isn't a great experience as it is today.

admins could purge communities, but this can cause unexpected breakages with other activitypub software that is more strict about cryptographic verification, as purging a community erases all information about it from the local instance, including the cryptographic private key. purging a community also only removes it on the local instance, so other instances would still have a cached (although possibly marked as deleted) copy of it. this would be the only method that frees up the name to allow creating a new community under the same name later on. locally this would also remove all posts and comments associated in that community, but other instances may think that they have users subscribed to the community and may still have posts and comments in there. this also means if a new community is created with the same name again, the local instance will still not know about older posts, but users on other instances might see them still, and the local moderator might be unable to interact with them at all, e.g. to potentially remove old problematic content.

the next option is removing a community as (instance-)moderator action. this will only mark the community as removed without further impact. regular users won't be able to access the community on the local or any other instance anymore, but its contents are preserved in case it gets restored at a later point in time. the name is not released and there isn't even an error message shown when trying to create a new community with the same name.

another option could be to "take over" the community and delete it, which is the act of the top community mod deleting the community (not a moderation action). in this case only the same top community moderator can restore it. this behaves mostly the same as removing it.

none of these options are good to use. imo purging should be avoided in any case, and the other options both require admin intervention to release a community later on and have no user feedback in lemmy-ui at this time, at least on 0.19.5.

for communities entirely without posts it is probably ok to just remove them and restore and transfer them if someone requests them. for communities with content the next best thing might be locking the community, potentially locking all posts if it's just a small number, to prevent unmoderated new content in that community, and put up a pinned post asking people to reach out if they want to take over the community. otherwise, if the community was removed or deleted, all the posts and comments within them would also be taken down with the community.

just as great as lemmy-ui

it does, but only if you use the autocomplete feature. it's also a bit delayed without any indicator that it's loading.

if you type @gedal and wait a moment it'll load @gedaliyah@lemmy.world to be selected:

The "fediverse link" on a post always points to the instance of the person who posted it, not the community instance. When posting from a lemmy.world account this means the fedilink is always the lemmy.world post link.

It is only shown for content coming from remote instances in Lemmy UI 0.19.3, although a later version changed that to always show.

this is by design. actor ids (unique identifier for accounts) should not be reused due to undefined behavior for how other instances will deal with that.

if you want to have a more technical explanation, https://socialhub.activitypub.rocks/t/reuse-of-identity-channel-addresses-revocation-reissue-of-keys/2888 does a decent job at explaining some of the issues with this.