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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RoundSparrow@lemmy.ml

RoundSparrow@bulletintree.com

Deleting a user with lots of comments (1,59k) modding a few large communities (~20) kills the backend · Github Issue #3165 · LemmyNet/lemmy (github.com)

submitted 2 years ago by RoundSparrow@lemmy.ml to c/lemmyperformance@lemmy.ml

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I think it would be ideal if we discuss strategies to find these kind of database failures in the logs or even share tips on better logging design to make these kind of database failures surface to instance operators/admins.

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