What is CDN [Content Delivery Network]? and How It Works?

CDN or Content Delivery Network. Here we are going to learn What is a CDN and how it works. I have discussed and explained the CDN working in details and have also covered the working considering carious scenarios. After watching this video you will have a good understanding of what is a CDN, its working and capabilities.

[@siranjeevimurugesan7957]

Super explanation. Thanks

[@DumbTutorials]

Thank you. I am very glad that you liked it.

[@paravind2979]

Thank you so much

[@DumbTutorials]

Glad you liked my video

[@lakshmisrinivaskiran1037]

Very well explained in a simple way. Thank you so much

[@DumbTutorials]

Thank you. Glad you liked it

[@yatinchawla19]

Advanced info in simple words. Commendable videos.

[@DumbTutorials]

Thanks Yatin,

[@maheshpalaye3230]

Good and simple explanation

[@biswatma]

Thanks a lot @DumbTutorials for this awesome presentation. :)

[@WeldingandNDT]

Nicely presented

[@infantmanojkumar2717]

Thank you Vivek :) Good One to understand

[@DumbTutorials]

Thanks Manoj.

[@rajeshkumarsingh4657]

Excellent explaination vivek bhaiya.
Please create a video on CDN solutions architect/ CDN operation engineer interview questions.
Please add WAF also..
Thank you vivek bhaiya.

[@KiranKumar-pu2yn]

Very good explanation about CDN Vivek.. May I know what are the technologies we should learn to build carreer in CDN..

[@Akhi7395]

please have an explanation over reliable transmission of data. Thank you

[@qatarlifestyle379]

Hi I am looking End to End request flow through CDN in case of Video and web page deliver to client including HTTP & DNS Concept.it would be great to crack inerview so kindly prepare and deliver detailed video on CDN including all concepts of DNS,HTTP,Request router ,load balancing and how to fix dns and http error codes in particular CDN.

[@DumbTutorials]

Good suggestion. I will try to work on it

[@ninja_psy]

He has studied from st.michael high school from Patna 1991 tilll 2002 I know him but he need to comment me at any time

[@Studboo]

OUG :)

[@sunkishalachaitanya7973]

I have one doubt.
How to whitelist the Akamai Ip address because there is large set of Ip address which cannot be done.
What is web dispatcher.

[@DumbTutorials]

You can have "Site Shield" enabled by them and then you will get a finite set of CIDR blocks of their servers which will connect with your origin server. It would be easier to whitelist them. In case there is an addition to the list, they will notify you and only when you acknowledge it, the new IP will be added to the pool.

[@mittulhansaliya5136]

Can i please have a link of presentation.

[@muralidharm6029]

Could you please share this PPT

[@kshitijshrivastav5172]

Hello sir, I've used azure cdn from Akamai and from Verizon as well....I'm accessing the endpoints from india but then also cdn is serving from a default location of US.... why it is so....i think it should serve from indian edge server

[@deepmoon3439]

Its because of HTTP Cache Control Settings. Watch the The unofficial Akamai video series Video 1, 2 & 3.

[@DumbTutorials]

CDNs, like AK, Cflare, may not always deliver from you nearest location. You may get mapped to a server to remote location as well based on how CDN wants to deliver your content. It also depends if the CDN customer is paying only to deliver from a certain region and not globally.

[@vijuvlogs]

By any chance, does it do a latency test to different servers. I am checking to see if the algorithm is designed in a way to check a few parameters before deciding the edge server?
Thank you in advance 😊

[@ratnadeepnandi3293]

@@vijuvlogs I guess CDN uses Anycast like DNS so by that it should get the nearest Edge servers depending upon the RTT/ Latency

[@vijuvlogs]

Adding to Ratnadeep and also my initial assumption, in Akamai at least this is how it works:
There will be something called as a maprule in Akamai CDN which is used for the best edge server calculation and it does consider RTT/latency and few other parameters to score the servers and the score is updated on a minute basis for pinpoints and overall score for 1 hour and this is how the best edge server is decided.
It also depends on what kind of traffic you are trying to access. Based on that, you may be served content from netstorage which may be the result of getting the US server. Also, it could be FreeFlow network or ESSL network. This is also part of the mapping based on customer CP code.

[@kshitijshrivastav5172]

Sir how can we know which cdn endpoint and from which location it is serving the request

[@DumbTutorials]

You can run dig or nslookup to see what IP you are getting mapped to. Then you can run ip to location sites search to get the info. Sometime, even response header will have details in "Server" header

[@kshitijshrivastav5172]

@@DumbTutorials thank you so much sir for your reply

[@rajareddyyaramala6634]

How much package I expect for 2 years?

[@DumbTutorials]

Absolutely Depends on the company and the role.

[@rajareddyyaramala6634]

I want to change my organisation have one year experience then how much ctc I expect bro

[@andreivatca897]

Lucky with the graphs. you need to practice this pitch dude. got me tired after 4 mins.

[@DumbTutorials]

Thanks for the feedback Andrei. Will work on it.

[@AnshuKumar-pb4ww]

Bhai dhang se samj le ........

[@beneslami9659]

the content is perfect. But dude, the accent is awful! How you expect the audience understand the concept ...

[@DumbTutorials]

Thanks for your feedback. I will try be be "as neutral as possible" next time.

[@TheJacquesvictor]

DumbTutorials ignore this idiot! His grammar and punctuation speaks for itself! You've done a great job presenting this video both verbally and visually! You are to be commended for your time and effort. Thank you!