Lemmy Server Performance, two birds with one stone, mass deletes of content: Account Delete, Community Delete, User Ban - moving these operations to a linear queue and add undo support / grace period (lemmy.ml)

submitted 1 year ago* (last edited 1 year ago) by [email protected] to c/[email protected]

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A general description of the proposed change and reasoning behind it is on GitHub: https://github.com/LemmyNet/lemmy/issues/3697

Linear execution of these massive changes to votes/comments/posts with concurrency awareness. Also adds a layer of social awareness, the impact on a community when a bunch of content is black-holed.

An entire site federation delete / dead server - also would fall under this umbrella of mass data change with a potential for new content ownership/etc.

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[-] [email protected] 1 points 1 year ago

I did perform some tests yesterday. DeleteAccount does NOT Delete the communities created by the account. If the account deleted was the moderator, the community will be left with zero moderators. That person's post and comments are overwritten, but a post created in the community by an account other than the deleted one should still function (not sure how deep the testing went on that, still enhancing testing).

this post was submitted on 25 Jul 2023

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Lemmy Server Performance

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lemmy_server uses the Diesel ORM that automatically generates SQL statements. There are serious performance problems in June and July 2023 preventing Lemmy from scaling. Topics include caching, PostgreSQL extensions for troubleshooting, Client/Server Code/SQL Data/server operator apps/sever operator API (performance and storage monitoring), etc.

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