[Bug]: Federation issue seemingly due to hard coded rate limiting

[DarkArc]

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Summary

My instance social.packetloss.gg has been unable to fetch new content from lemmy.world despite prior months of flawless operation.

The only thing I'm seeing in the logs that seems to add up is this:

2024-03-24T00:42:10.062274Z  WARN lemmy_utils: error in spawn: Unknown: Request limit was reached during fetch
   0: lemmy_apub::objects::community::from_json
             at crates/apub/src/objects/community.rs:126
   1: lemmy_apub::fetcher::user_or_community::from_json
             at crates/apub/src/fetcher/user_or_community.rs:87
   2: lemmy_server::root_span_builder::HTTP request
           with http.method=POST http.scheme="http" http.host=social.packetloss.gg http.target=/inbox otel.kind="server" request_id=688ad030-f892-4925-9ce9-fc4f3070a967
             at src/root_span_builder.rs:16

That however seems to be hard coded:

lemmy/crates/apub/src/lib.rs

Line 29 in ef4bb3c

pub const FEDERATION_HTTP_FETCH_LIMIT: u32 = 50;

Steps to Reproduce

Wish I knew :)

Technical Details

lemmy.log
nginx-lemmy.world.txt

Version

0.19.3

Lemmy Instance URL

https://social.packetloss.gg

[DarkArc]

Closing this while I talk to some other lemmy admins