this post was submitted on 30 Sep 2023
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Programming

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Lemmy 0.19 updates (self.programming)
submitted 1 year ago* (last edited 1 year ago) by Reader9 to c/programming
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https://programming.dev/post/3666732

Change log for upcoming Lemmy version 0.19.0 I am just reposting this from the original post: https://lemmy.ml/post/5711722.

It’s interesting to see this for the software we’re all using and it makes me want to learn a bit more about the architecture. Quite a few user-facing features and some backend improvements. For example:

Outgoing Federation Queue The federation queue has been rewritten to be much more performant and reliable. This is irrelevant for client developers, but admins should look out for potential federation problems. If you run multiple Lemmy backends for horizontal scaling, be sure to read the updated documentation and set the new configuration parameters. The Troubleshooting section has information about how to find out the state of the federation queues.

https://github.com/LemmyNet/lemmy/pull/3605

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[–] [email protected] 15 points 1 year ago (1 children)

Neat. IIRC lemmy.world is running a ton of backends in parallel for performance, nice to see that it's been taken into consideration by the devs 😁

[–] Reader9 3 points 1 year ago

Agreed. My copy lost this documentation link in the original which gives more detail about the horizontal scaling: https://join-lemmy.org/docs/administration/horizontal_scaling.html.

It seems really straightforward (which is a good thing), each backend Lemmy_server handles incoming requests and also pulls from a shared queue of other federation work.