2.2 The Web and HTTP part 2

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2 жыл бұрын

Video presentation: Computer Networks and the Internet.
2.2 The Web and HTTP (part 2). Web caches, Conditional GET, HTTP/2
Computer networks class.
Jim Kurose
Textbook reading: Section 2.2, Computer Networking: a Top-Down Approach (8th edition), J.F. Kurose, K.W. Ross, Pearson, 2020.
See gaia.cs.umass.edu/kurose_ross for more open student resources.

Пікірлер: 18

@karanpreetsingh5966 2 жыл бұрын

Totally the inspiration I needed in my life.

@starless9 Жыл бұрын

Anyone know if this or an equivalent course is offered on a MOOC platform? Just to get a certification for completing the material.

@varshashiremath1431 10 ай бұрын

Just amazing

@sandboom_7260 7 ай бұрын

Will the web cache server send a head request every time to the origin server to get if it has gotten modified whenever i access that site

@devmahad 8 ай бұрын

Performance: Web caches, Conditional GET, HTTP/2 HTTP/3

@pythonicd1239 2 ай бұрын

8:29 how do we get the 0.01 sec queueing delay? And how do we take the average data rate to be L/R. In the sense that if the link capacity is 1.54Mbps, but it needs to be utilised by both the institutional router and the public internet router to load bits onto the link. So does that means that the sums of the rates at which btoh the routers are loading bits onto the link shouldn't exceed 1.54 Mbps? So how do we know that the browsers receive requests the rate at which they send them? Like 15 requests are sent in one second, that is 15*L packets in one second.

@daeunlee5921 2 жыл бұрын

Hello at the 4:50ish mark can you explain how you did your math?

@alessandrovecchi5147 2 жыл бұрын

1.50/1.54 and 1.50M/1G

@user-hp1oz4ul6w 3 жыл бұрын

WAH DADA WAH

@jatoxo 10 ай бұрын

I'm confuzzled by all the splitting that's happening in every layer and why it has to happen Currently you can have an IP packet containing a partial TCP packet which contains part of an HTTP/2 packet which contains part of the HTTP Object Why does every layer need to split it's data up, you'd think that one single layer should be responsible for this

@user-qe3qm6np9b 6 ай бұрын

still wanna know?

@shayfabrizio3107 2 жыл бұрын

Poggers Keanu

@aviChillin 3 ай бұрын

At 2:55 , “no-cache” means the response can be stored in caches, but the response must be validated with the origin server before each reuse. It does not mean "don't cache at all."