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A comment on Lessons Learned from Twenty Years of Site Reliability Engineering. Parent comment

Re:Lessons Learned from Twenty Years of Site Reliability Eng... by gaogao on Friday October 27, 2023 @12:47PM (#38040808)
Also make sure your backup channel can scale. Getting a flood of 10,000+ folks over to a dinky IRC server can knock it over easy. Throttling new joinees isn't a panacea either, since there might be someone critical to get on a channel which throttling can complicate.
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Re:Lessons Learned from Twenty Years of Site Reliability Eng... by londons_explore on Friday October 27, 2023 @01:21PM (#38041255)
Maybe I'm naive, but I would imagine that any raspberry pi could run an IRC server with 10,000 users...

Surely 10,000 Users each on average receiving perhaps five 50 byte messages per second (that's a very busy chat room!) is a total bandwidth of 2.5 megabytes per second.

And the CPU time to shuffle messages from one TCP connection to another, or encrypt/decrypt 2.5 megabytes per second should be small.

If they're all internal/authed users, you can hopefully assume nobody is deliberately DoSing the server with millions of super long messages into busy channels too.

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Re:Lessons Learned from Twenty Years of Site Reliability Eng... by xena on Friday October 27, 2023 @04:37PM (#38043587)
IRC servers are single threaded. You have contention at that point.
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Re:Lessons Learned from Twenty Years of Site Reliability Eng... by goalieca on Friday October 27, 2023 @07:16PM (#38045195)
Some of the bigger irc channels have thousand users and this was in the day of 128MB of ram.
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Re:Lessons Learned from Twenty Years of Site Reliability Eng... by pinkgolem on Saturday October 28, 2023 @06:48AM (#38048765)
Sure it's possible. But you need to test... For example there was/is a 1k file descriptor limit per process in a lot of distributions..
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Re:Lessons Learned from Twenty Years of Site Reliability Eng... by pests on Saturday October 28, 2023 @03:37AM (#38047946)
Let's not forget IRC channels can be split between servers too - don't wanna complicate the backup system too much but this is in the original design of IRC.
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