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

Sap is used by the cisco ios for which encapsulation types, "SAP" is used b...

"SAP" is used by the Cisco IOS for which encapsulation types? Ans) Three types:- Ethernet_802.2 Token-Ring FDDI_802.2

Reliability - fundamentals of networks , Reliability Reliability  is t...

Reliability Reliability  is the measure of how  often  a network is usable. MTSF( Mean time  Between Failure) is a measure of the average time  a component  is expected to ope

Parts count method, PARTS COUNT METHOD This prediction method is appli...

PARTS COUNT METHOD This prediction method is applicable at preliminary stages, during bid proposal and early design phases; when insufficient information is available regardin

Explain how contract net works, Question 1 Contract Net Protocol is the...

Question 1 Contract Net Protocol is the best known and most widely used cooperation protocol Explain how contract net works Discuss the benefits and limitations of con

Connection multiplexing, CONNECTION MULTIPLEXING:  In various circumst...

CONNECTION MULTIPLEXING:  In various circumstances transceiver can be in convenient e.g. workstations in a LAN. Connection multiplexer acts multiple computers to a single tran

Explain about the switches, Explain about the Switches LAN switches are...

Explain about the Switches LAN switches are an expansion of the method in LAN bridging, which controls data flow, handles transmission errors, gives physical addressing, and ma

Wifi and 3g, what is similarity of wifi and 3g

what is similarity of wifi and 3g

Implementation of distributed systems, Distributed systems are composed of ...

Distributed systems are composed of a number of physically separate machines connected by one or more communication links. Unlike parallel systems, there's no shared clock or memor

Vector-distance algorithm, Vector-Distance algorithm illustrated in more d...

Vector-Distance algorithm illustrated in more detail below: Packet switches wait for next update message and they goes by entries in packet. If entry has least path to destinat

Reliable data transfer - transport layer, Reliable Data Transfer Figur...

Reliable Data Transfer Figure illustrate the  framework for reliable  transfer. The service  abstraction provided  to the upper  layer  entities is that  of a reliable channel

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