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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lemmy.world feedback is that 0.17.4 performs better than 0.18.1 - is this true? What is slower? (lemmy.ml)

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

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Specifically the database backend. Is the polling for notifications causing more database load? From my personal testing, lemmy.ml has the same performance problems with 0.17.4 that it does with 0.18.1 and I haven't seen anything in the code changes that are that significant with database.

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