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

Explain about error detection, Q. Explain about Error Detection? Data c...

Q. Explain about Error Detection? Data can be corrupted during transmission because of accidents, Storms, sudden increase in electricity and voltage / decrease in signal power

Subscriber database - computer network, Subscriber Database Core ne...

Subscriber Database Core network  also hosts  the subscribers  database ( for e, g HLR in GSM systems). Subscriber  database  is accessed by core  network  nodes fro  funct

What is the function of the osi session layer, What is the function of the ...

What is the function of the OSI Session Layer? This layer gives the protocols and means for two devices on the network to communicate with each other by holding a session.  Thi

Tunnelling - point to point, Tunnelling To guarantee privacy for the  o...

Tunnelling To guarantee privacy for the  organization, VPN specifies that each IP datagram destined for private  use of the  organization, must  first be  encrypted and then en

components in the following command ''interface serial0/1/1'', Normal 0 ...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Uneven load distribution, Uneven Load Distribution In the parallel com...

Uneven Load Distribution In the parallel computer, the problem is dividing into sub-problems and is assigned for computation to various processors. But sometimes the sub-probl

Managing and securing the web utility of the router, Managing and Securing ...

Managing and Securing the Web Utility of the Router Step 1: Configure web access. Navigate to the Administration section. Change the router password to cisco. For Web Uti

What are different ways of securing a computer network, What are different ...

What are different ways of securing a computer network? There are lots of ways to do this. Install reliable and updated anti-virus program on all computers. Make sure firewalls

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