NGINX Internal Architecture - Workers

[@hnasr]

Get my introduction to NGINX udemy course nginx.husseinnasser.com

[@RajnishAhuja]

Hussein, Do you have a course on istio and certificate management ( By you or somebody you respect ) ?

[@shubhamdhal689]

First Comment on a Hussein Nasser vid :) One thing to note is how fast KZbin is able to serve the video in my feed. I think I started watching this almost as soon as Hussein uploaded the video(it was saying zero views, but ofcourse that counter is eventually consistent and is cached at multiple layers). KZbin recommendations is truly a feat of engineering

[@nikhilsinghal1315]

I work on nginx modules a lot. You should also discuss the moduler way of adding new code in nginx. The code architecture of nginx is pretty neat.

[@rio512hsu]

Any good reading material recommended?

[@franpereyra5459]

It would be great to see an explanation like this, about Apache web server, in order to understand the main differences with Nginx (pros and cons). Amazing explanation, thank you!

[@hnasr]

Great idea

[@tempaccount8256]

Hussein, your contents are always awesome, with a lot of information. I was wondering if you can tell us about your past experiences and how you get to the place you're now, and also what's your current stack? And more😁😁, We will be lucky😅

[@thescubabuba6470]

Is there a way to calculate how many connections a worker can handle simultaneously?

[@hnasr]

I think this is a very good question and needs low level kernel level and logging to see how much latency is added with 1 , 2 and 3 and then 4 threads. And then seeing how many requests can be processed with each configuration

[@achrefnabil2463]

I think if you wanna calculate the maximum number of connections per worker process you should divide the system file descriptor limit by the number of worker processes. For example, if the file descriptor limit is 1024 and there are 4 worker processes each worker process can handle up to 256 connections simultaneously

[@krishnamohanyerrabilli4040]

👏 thanks for this, clearly understood what's happening behind the scenes

[@shreemaan-abhishek]

Oh hey!

[@nickkman90]

Fabulous lecture! Thanks Hussein.

[@KuldeepYadav-jn3ld]

Could you please have a small session about Public Suffix List ?

[@blevenzon]

Thank you for the clear and concise explanation 😊

[@habibicoding]

Very interesting, good job, shater/شاطر!

[@AjithkumarSekar]

This is great. Can you also talk about CGI (Common Gateway Interface) and why we need it?

[@faizsyed658]

Do you want internal architecture of CGI? If you just wanna better understand about cgi, there are many good videos from other channels already

[@SB-qm5wg]

nginx is one of those things I've barely admin'ed at jobs but never put time in to master.

[@seanknowles9985]

How to build a http3 client, I am struggling to get my head around why some http libraries are still http1 and why they've not been updated? (this could be interesting content)!

[@manojBadam]

How does file descriptors come into picture for handling more connections?

[@rehaanmazid2435]

Hey @Hussien, When a NGINX server is set up in docker. What happens to the worker process and core mapping? I assume it will not map to the host machines cpu cores. What happens in this case?

[@dimtass]

A good strategy, especially to bare metal embedded servers is to use SMP IRQ affinity and map the netif IRQ to a single core. Then only use the rest cores to handle requests. This will improve the performance a lot.

[@Rake141]

I would love to watch more stuff like these, it could be a series like e.g. IIS, Apache architecture etc

[@abelsimon5308]

planning a course on envoy as well? (have seen your TL-DR about the proxy)

[@hnasr]

made a video on envoy but im not satisfied with it. need to redo it.

[@abelsimon5308]

​@@hnasr maybe a udemy course if you fancy would be even better I've thoroughly enjoyed the nginx one. It does also help with the bigger picture when having multiple layers of proxies. E.g a project I'm working on right now, we're having an HA proxy and two envoys for egress. (one sidecar with custom listeners set up for port forwarding, and one egress in a DMZ to fulfil these forwards)

[@TylerJusCodes]

Hey .. long time my friend. been awhile I visited here.

[@raghavgupta1799]

This topic should be in the Indian Engineering courses as a separate subject.

[@mohammedabulsoud1819]

so goood