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

Mail access protocols - application layer, Mail Access Protocols The e...

Mail Access Protocols The e mail  message  are usually  sent to  an email  server that stores received message  in the  recipient   e mail  mailbox.  The user  retrieves messa

Troubleshooting tcp/ip, I''m having trouble with understanding a diagram fo...

I''m having trouble with understanding a diagram for my assignment

TCP, TCP creates a reliable data transfer service, in addition to IP''s unr...

TCP creates a reliable data transfer service, in addition to IP''s unreliable best-effort service. Study the related sections of the text, and in your own words, summarize how TCP

Hierarchical addressing and routing, The steps of forwarding the packets of...

The steps of forwarding the packets of information is known routing. The information about receivers is saved in routing tables. Note that several entries have same next hop. It is

Connection oriented multiplexing and de multiplexing, Connection Oriented M...

Connection Oriented Multiplexing And De multiplexing TCP socket  identified by 4 tuple: a.Source IP address b.Source port number c.Destination IP address d.Destina

What is extranet and intranet, Extranet and Intranet An Extranet is a t...

Extranet and Intranet An Extranet is a type of Intranet (Internal TCP/IP Network) that has been selectively opened to a firm's suppliers, customers. Intranet An intrane

database server in client server environment, Normal 0 false ...

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

Subtract two from number of hosts, Why do we require to subtract two from n...

Why do we require to subtract two from number of hosts?

Networking, Discuss the interdependence of networking hardware and software...

Discuss the interdependence of networking hardware and software. Is it possible to have one without the other?

Database servers connected as a cluster to the main server, Database server...

Database servers connected as a cluster to the main server There could be three database servers connected as a cluster to the main server to provide better connectivity and se

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