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 network services, Explain Network Services Network services are...

Explain Network Services Network services are the thing that a network can do. The main networking services are File Services: This contains file transfer, storage, data m

What is meant by asymmetric multiprocessing, What is meant by Asymmetric Mu...

What is meant by Asymmetric Multiprocessing (AMP)? It imposes hierarchy and a division of labor between processors. Only one designated processor, the master, controls (in a ti

What are major types of networks and explain, What are major types of netwo...

What are major types of networks and explain? Server-based network: Give centralized control of network resources and depend on server computers to give security and network

What is domains in active directory, In Windows 2000, a domain describes bo...

In Windows 2000, a domain describes both an administrative boundary and a security boundary for a collection of objects that are relevant to a particular group of users on a networ

State the disadvantages of adaptive routing process, State the Disadvantage...

State the Disadvantages of adaptive routing process  (1) The routing decision is more difficult; thus, the processing burden on network nodes enhances. (2) In most cases, ad

What is the main purpose of ospf, What is the main purpose of OSPF? OSP...

What is the main purpose of OSPF? OSPF, or Open Shortest Path First, is a link-state routing protocol that uses routing tables to verify the best possible path for data exchang

Byte number - transport layer, Byte Number TCP number all data  bytes ...

Byte Number TCP number all data  bytes that  are transmitted  in a connection. Numbering  is independent  in each direction when TCP receives bytes of data  a process. It stor

Create a wireless can, You are the network administrator for the City of Jo...

You are the network administrator for the City of Joshua Texas. The city government offices are located in five buildings separated by a State Highway controlled by the State of Te

What are three ways to give login access to router, The three ways to give ...

The three ways to give login access to the router are by the Console port, auxiliary port, and virtual terminal (Telnet)

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