Everything You Need to Know About DNS: Crash Course System Design #4

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Everything You Need to Know About DNS: Crash Course System Design #4

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Күн бұрын

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Пікірлер: 75

@angularfreelancer923 Жыл бұрын

I literally got tears of joy by the end of the video. Do you know why? my brain realised it had a quality learning for 5:44 minutes. Hard to imagine the efforts behind making such a wonderful session.

@phoenix-tt Жыл бұрын

Didn't know that you could shorten TTL before changing DNS records to ease the transition. Very valuable information, thank you!

@testbesthostingtestbesthos557 Жыл бұрын

it will be applied for future updates, not for first update, because middle servers will still wait till their old TTL expire.

@matthewsokolik5326 10 ай бұрын

This is the best explanation on DNS I have seen. Thank you for such a presentation.

@victornoagbodji Жыл бұрын

This is one of the best explanations of how DNS works I have seen in a while. Thanks so much 😊🙏

@frozenheart4855 Жыл бұрын

check computerphile channel

@ReflectionOcean Жыл бұрын

DNS translate domain names to IP addresses. It's hierarchical and de-centralized.

@anjalits6228 2 ай бұрын

Thankyou this is very useful to me

@felipeschossler Жыл бұрын

Your skill for simplify things is not from this world. Thank you, I see you! 🙏

@davidrodriguezramirez1941 18 күн бұрын

Incredibly valuable information, especially the part about changing the TTL way before really changing the ip so it can propagate on time

@harrisonyg Жыл бұрын

I have seen your works from the beginning, I appreciate your hard work, thank you for making this to be more understandable.

@rongrongmiao3018 Жыл бұрын

Great! You should also cover different dns record types like a record, mx record, cname, Alias etc

@mohitggarg Жыл бұрын

Great video, very informative 4 quick questions.... 1. Who owns the ip address of DNS resolver 2. Browser sends http request which is stateless, so every time it will go to check the dns resolver 3. How browser solves this quickly can you elaborate this much more. 4. Who will update the ip addresses of TLD name servers

@ManishKak 4 ай бұрын

the editing on this video is top notch.. thanks!

@Zmey5656 3 ай бұрын

Thank you. It's simple explanation for me, but without understand all system will be too difficult understand all system for junior or intern.

@ingridfuller 6 ай бұрын

Excellent video on how DNS works. Great job!

@alirezashafaie7394 Жыл бұрын

best channel on system design

@Joeyxyx 3 ай бұрын

BBG never disappoints!

@herbandpeach 8 ай бұрын

thank you for your fantastic video! the audio and video information together was superb. thank you so much and i will highly recommend this video to others

@vadud3 Жыл бұрын

Really enjoy your youtube articles. Would you cover the difference between recursive and iterative dns query may be on another youtube episode. Thank you!

@RayanMADAO Жыл бұрын

Amazing 👏 Short enough to keep my attention and low level enough to be interesting and informative

@PHINIxXGaming Жыл бұрын

What A Great Explanation, Wow

@saritachaudhary5843 Жыл бұрын

I love this channel!

@DK-ox7ze Жыл бұрын

I am surprised that there was no mention of ICANN in the video. Where does ICANN stand in the DNS resolution? Are you referring to ICANN as Root resolver here?

@krrishh7 2 ай бұрын

[non-tech-comment] I have been watching contents from this channel for very long. Always felt like he had a familiar face. Today, I just realised he had a striking resemblance with the Keymaker in matrix, (he is a more happier version😄) 🔑❤

@DunOpondo 10 ай бұрын

Awesome illustrations, keep it up 👍🏿

@dehman6836 Жыл бұрын

Great video, I appreciate the free content and I'm looking forward for more!

@jaloliddinruzikulov8279 Жыл бұрын

Thank you for explaining in a nutshell

@Spider-Man_67 Жыл бұрын

Thanks for the Info, man

@That_Guy_You_Know 3 ай бұрын

Missed a few catches: browser(mentioned) --> OS --> router --> then ISP and so on. Otherwise this was a fantastic explanation and I always love your animations! What software or tool do you use for the animations?

@davidgeeraerts9311 Жыл бұрын

Very nice! Thank you for your efforts.

@samglima 3 ай бұрын

they should be playing this video in the universities

@ajitoriginal 3 ай бұрын

Very well explained

@samglima 3 ай бұрын

great video!

@trailerhaul8200 Жыл бұрын

Love your channel

@mathewsjose1990 3 ай бұрын

Good explanation !

@anu8928 Жыл бұрын

Awesome explanation!!

@macanthony1982 6 ай бұрын

this was a fire explanation....🔥🔥🔥🔥🔥

@mrsmith-lp5lg Жыл бұрын

Amazing videos! What library/tool are you using to make the videos? Pleeease, share.

@heptagonrus Жыл бұрын

You did not explain what exactly TTL is. Is it TTL of a DNS record, of a DNS cache entry, of a DNS request, of a DNS propagation event, ... ?

@netto_info Жыл бұрын

Perfect! Thank you!

@Soumik.Biswas Жыл бұрын

Thanks for sharing.

@NathanSubramani 5 ай бұрын

Will we be able to capture the redirects happening between resolver, root, TLD servers in our browser developer tools network tab??

@bntheyoutube 7 ай бұрын

Fantastic!!!

@AleksandarT10 Жыл бұрын

Great video!

@egor.okhterov 6 ай бұрын

I don't understand how does an operating system participate in domain name resolution except for providing "open()" and "socket()" system calls to open files and do network communication using sockets?

@evanbzzz Жыл бұрын

I love the way you explain things you think you can do a playlist on dynamic programming ? Related to getting a job on an approach to solve leetcode or hackerank questions I think it may help us uk people apply for jobs thanks again!

@ashwinsridhar8513 8 ай бұрын

Very nice video but can u tell me where dns resolver and dns server will be located???

@victorh.torres2713 Жыл бұрын

Amazing info, thanks. My concern is, there are a lot of request only for translate the domain to a ip address and after of that, the browser will can get the resources for that ip address. I know that there is running in a fraction of seconds, but is there a better way today instead to add in more dns server around the world? Regards.

@IsanHawke 8 ай бұрын

Great video. What did you use to create the animation? Thank you in advance.

@kevinfredericks2335 Жыл бұрын

you make great videos

@raj_kundalia Жыл бұрын

amazing!

@michalk2497 Жыл бұрын

awesome!

@vivek7231 Жыл бұрын

What is the sotware that you use for editing the videos and how are you gathering different images and flowcharts of design?

@23jwhetstone Жыл бұрын

Why would a network be connected to a FC00 dns server and not have a number instead

@Tarun_Kumar_bhu Жыл бұрын

I have a quick question. What is the logic to identify the country from the IP address.

@muddukrishnahm6581 11 ай бұрын

May i ask which tool you have used to make this animation, It's very impressive.

@tuanvuphan7454 Жыл бұрын

can you do iptables next?

@mrmuffin5046 Жыл бұрын

Can you explain DNS in email role. I can't under it

@waikittsang4825 Жыл бұрын

Can you explain DNSSEC too?

@sprytnychomik Жыл бұрын

I'll just stick to /etc/hosts - an OG DNS

@anhtudinh4909 Жыл бұрын

can someone help me: does dns resolver run on my laptop or on a server?

@huanorton1974 Жыл бұрын

why do not you intruduce the dnssec

@user-iv4vx9tb4x 5 ай бұрын

Irfan ali

@robl39 Жыл бұрын

If DNS uses UDP as the transport protocol, how does the DNS resolver correlate a given UDP request for a DNS query to any of the downstream servers to a given response? My understanding is UDP doesn’t have responses like TCP, so how do you get this “request/response” behavior?

@phoenix-tt Жыл бұрын

You're mistaking the transport protocol to the application protocol. It doesn't matter if you exchange information via TCP or UDP, it only matters that TCP guarantees message delivery by using SYN/ACK messages, variable window sizes, etc. For the application, like DNS queries, you would still get the response via UDP, but you don't waste network round-trips doing TCP. edit. From the program perspective, the easiest implementation (and the only one on Windows, if I recall correctly) is to block the thread and wait for the UDP response. The operating systems (be it Linux, Windows or even a router) are smart enough to send the message from a specific socket to the right application thread. So your naive blocking DNS resolver will be resumed and can process further.

@shreyashjoshi4188 Жыл бұрын

Is it possible to modify the DNS records in local cache of system.

@jmeadows469 Жыл бұрын

It's much easier to just add records to your hosts file, which your OS checks first before resolving a name over DNS. It's in /etc/hosts on Linux/Mac, and c:\windows\system32\drivers\etc\hosts on Windows. You'll need admin privs to edit it, though.