this post was submitted on 29 Jun 2023
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Lemmy Server Performance
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Lemmy Server Performance
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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Lucky yours did delivery inbound to lemmy.ml - it is the outbound queues of the servers with lots of active communities that is still failing badly in 0.18.0
At this point, on important topics like this, I go to the original server to make sure I'm not missing posts or comments, as Lemmy to Lemmy is really faltering.