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

Describe the term - certification authority, Describe the term - Certificat...

Describe the term - Certification Authority The certification is most easily implemented with a custom solution combined with a server, called the Certification Authority (CA).

What to do to connection with external communication, What to do to connect...

What to do to connection with external communication For dealing with external communication, the Web server must have a static IP. Having a static IP could also be a problemat

Data mining, The following DNA sequences are extracted from promoter region...

The following DNA sequences are extracted from promoter region of genes which are co-regulated by the same transcription factor (TF). The nucleotide segments capitalized in the giv

Show the steps used at sender end by check sum, Q. Show the steps used at s...

Q. Show the steps used at sender end by check sum? The sender follows these steps: The data unit is divided into "k" sections, each off "n" bits All sections ar

Ipx traffic on a network, To monitor ipx traffic on a network, what command...

To monitor ipx traffic on a network, what command would we use? Ans) show ipx traffic

Difference between trigger and rule, What is the difference between trigger...

What is the difference between trigger and rule? Ans) The triggers are known as implicitly by database generated events, whereas stored procedures are known as explicitly by cli

What do you mean by openMP, Q. What do you mean by OpenMP? OpenMP is a ...

Q. What do you mean by OpenMP? OpenMP is a compiler directive based standard developed in late 1990s together by a group of main computer software and hardware vendors. It is p

Message passing libraries mpi and pvm, In this part, we shall talk about ab...

In this part, we shall talk about about message passing libraries. In history, various message passing libraries have been available since the 1980s. These executions differed subs

Enable wireless security - ccna, Enable Wireless Security Step : Confi...

Enable Wireless Security Step : Configure Windows to use WEP authentication.  Navigate to the Network Connections page again and right-click the Wireless Network Connection

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