Distributed systems, Computer Networking

Assignment Help:

There are two dominant forms of building distributed systems: client-server systems, i.e. systems in which one machine acts as a server and act as clients; and peer-to-peer systems, where each host is both a server and a client. Standard web access follows the client-server model, and services such as BitTorrent follow the peer-to-peer model. However, in real life these are not completely distinct; for instance, internally Google applies some of each of these methodologies. Actually, client-server system are sometimes implemented as a chain of clients and servers, even though from the point of view of the client there's only one server.

Another possible building pattern is that in which the client communicates directly with only a server, but in the background its requests are actually processed by a cloud of machines, which actually resembles the way Google works internally. In this case, the cloud of machines  implements a system with lots of redundancy (e.g. via a big distributed ?le system). Some of the machines in the cloud hold data, and other machines hold meta-data. When some client requests, for instance, a ?le, the meta-data servers ?rst identify which other machines hold each piece of that ?le. This type of architecture represents the current trend being followed when creating large scale systems. So, in practice, we see that current successful large scale systems are a mix between client-server architectures and peer-to-peer systems, implemented with lots of storage and computational redundancy.


Related Discussions:- Distributed systems

Set cookies 1178345 - application layer, Set Cookies 1178345 When  Hus...

Set Cookies 1178345 When  Hussan  browser receives  the HTTP response  message it sees the set cookies header. The  browser then appends  a line to the special cookie file  th

Explain token bus sublayer protocol, Token Bus Sublayer Protocol Se...

Token Bus Sublayer Protocol Send for some time then pass token If no data after that pass token right away Traffic classes 0, 2, 4 and 6 (highest) Internal s

Networking security, difference between spambox and inbox in gmail

difference between spambox and inbox in gmail

Ip message finally reassemble, Concept of how does the IP message finally r...

Concept of how does the IP message finally reassemble?

TCP for live video, 1. What advantages and disadvantages does TCP have for ...

1. What advantages and disadvantages does TCP have for live video teleconferencing applications

Define the term - store-and-forward and cut-through switch, Store-and-forwa...

Store-and-forward switch  The layer 2 switch accepts a frame on an input line, buffers it briefly, and then routes it to the appropriate output line. Cut-through switch

LAN, categories of LAN

categories of LAN

Advantage of ip sec tunnelling mode, Advantage of IP sec  Tunnelling Mode ...

Advantage of IP sec  Tunnelling Mode IP Sec  tunnelling mode  has the  following  advantages: a.Security : Ts IP sec tunnelling mode  secure somewhat but  not the best. In a

Connection-oriented service, Sender requests connection from network. Other...

Sender requests connection from network. Other receiver agrees to connection. Computers interchange data through connection. One-endpoint requests network to split connection when

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd