When is concurrency an issue?

At what point/scale does concurrency become an issue in a web server? I followed Primeagen's videos comparing Rust, Go, and Node and I take his point that Rust is more performant. But at what scale does this matter? I know netflix and other huge co's write node/restify servers and I imagine they wouldn't do that if they were incurring huge performance hits. If you were to write a t3 app, is there a point at which it just starts to shit the bed?
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Unknown User3y ago
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InfiniteCodeMonkeyTheorem
This is a really really good answer, thank you! I think it's clicking now: if the underlying language/framework is less efficient at handling requests then you need more resources to handle the same number of requests by scaling horizontally in the cloud. And I agree: the t3 stack is the easiest way to go from 0 to 1. I'm having a lot of fun building with it.
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