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

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Big Lemmy server lemmy.world has put into production critical performance fixes from a runaway SQL query identified by analyzing pg_stat_statements output - and greatly reduced their server overload! (lemmy.world)

submitted 1 year ago* (last edited 1 year ago) by RoundSparrow@lemmy.ml to c/lemmyperformance@lemmy.ml

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lemmy.world announcing to public that this is installed on their production server: https://lemmy.world/post/1061471

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[–] kurikai@lemmy.world 19 points 1 year ago (1 children)

Awesome work everyone

[–] Carnelian@lemmy.world 14 points 1 year ago

Literally night and day, super impressive

[–] pleasemakesense@lemmy.world 12 points 1 year ago (2 children)

Nice! Now I don't have to jump around between 3 accounts to browse xD

[–] pleasemakesense@lemmy.world 13 points 1 year ago

Jesus Christ it's snappy

[–] subtext@lemmy.world 5 points 1 year ago

I was a bit bummed because I had really started on lemmy.world and I didn’t want to lose my comment history, so I was holding out hope that the admins could get these problems resolved and voila, it’s magical how well it seems to be running

[–] RoundSparrow@lemmy.ml 10 points 1 year ago

My instance server is now getting over 10 comments a minute delivered by lemmy.world, federation outbound is going much better.

[–] TragicNotCute@lemmy.world 8 points 1 year ago

Amazing team effort.