Hi,

let me add 2 cents to the topic.

On Fri, Jan 28, 2022 at 09:29:54PM -0500, hablutzel1 wrote:
> Hi Maxim, I'm not really familiar with NGINX source code or with the C
> language for that matter, so could you please provide more detail on why
> does NGING require a non-blocking DNS resolver? Couldn't it rely on child
> processes or threads to not block?

There are many resources available in internet about non-blocking IO,
threads and so on, and here's the one of those about applications
that handle 10000s of requests per second,
https://medium.com/ing-blog/how-does-non-blocking-io-work-under-the-hood-6299d2953c74

I'd highly recommend to read it and understand.

Also, here's great article I'd recommend to read right after after
the previous one, http://www.catb.org/~esr/faqs/smart-questions.html

Hope it helps a lot.

Thank you.

--
Sergey A. Osokin
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