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

What is project 802, What is Project 802? It is a project begins by IEE...

What is Project 802? It is a project begins by IEEE to set standards that enable intercommunication among equipment from a variety of manufacturers. It is a way for specifying

What is money laundering and how is money laundered, Question: a) (i)...

Question: a) (i) Describe the entire process of credit card processing, identifying the different steps and parties involved. (ii) What are the roles of the acquiring ban

Redundant routing information, Notice repetition of information in routing ...

Notice repetition of information in routing table for node 1 as given above in the figure. We can see that switch has only outgoing connection, all traffic must goes that connec

Authentication mechanism in vpn, What are the dissimilar ways authenticatio...

What are the dissimilar ways authentication mechanism in VPN?

Which type for communication switch do, In case of any new event switch do ...

In case of any new event switch do broadcast, after that always do Unicast.

What is frequency diversity, What is Frequency diversity Due to the tra...

What is Frequency diversity Due to the transmission is spread out over a larger bandwidth, frequency-dependent transmission impairments, like as noise bursts and selective fadi

WIRELESS COMMUNICATION, how does the near/far effects infulence TDMA system...

how does the near/far effects infulence TDMA system?what happen CDMA system? what are countermeasures in TDMA system/

Explain in brief about crc, What is CRC The CRC is computed while trans...

What is CRC The CRC is computed while transmission and appended to output stream as soon as last bit goes out onto wire. If the CRC were in header, it will be necessary to make

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