submitted 1 week ago by BB84@mander.xyz to c/mander@mander.xyz

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Server is slow for me in the past few days. Anyone else feeling the same?

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[-] admiralpatrick@lemmy.world 2 points 1 week ago

Check your web access logs for these 3 IPs:

134.19.178.167
213.152.162.5
134.19.179.211

And see if they're making repeated un-scoped (no page paramater) requests to /api/v3/comment/list. If they are, block them in your firewall.

Those used to hit my instance constantly with requests like /api/v3/comment/list?sort=Old&page=16514 (yes, page 16,414). When I blocked those IPs making those requests, problem solved.

[-] Sal@mander.xyz 2 points 1 week ago

Thanks!

I don't see those specific IPs, nor 16514. But now I see what scrapers tend to look like in the logs :)

I am now pretty sure that the cause was scraper-like activity coming from the Mlmym front-end that I am serving over an onion site. I am not sure if it randomly started mis-behaving or if a tor scraper was using it.

After blocking this, federation was restored, performance increased, and CPU use came down:

this post was submitted on 14 Oct 2025

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