For many applications, though, when the costs are right, this form opens up new ways to serve employees, customer, and citizens.
I think that in thinking about the excitement around P2P, you should try to look into it deeply and find out why there are elements that are clearly full of promise, and why it clearly has some things that are different than what many people were used to before. There are other systems that do the same file sharing, but use no central server for connecting PCs.
This is a Person-to-Person system.
Every system could be different. With the growth of the Internet because of email and the web, the communications system to connect dispersed, independent PCs together became available. It was also hoped that companies and individuals that were using standalone applications or client-server applications would switch to similar applications running as web applications.
Readers and writers paid for the equipment and communications cost. Transaction processing Transaction processing systems have a single server with custom software doing computation and data storage. There was another boost in excitement about computing from the realization that there were other topologies that gave the user of a PC even more options for choosing applications and more options where to have data created, stored, or used.
Computation is what the CPU does, running the program.
The most important data is the list of names used to locate other systems a "buddy list"and that is often stored on the PC.
Adding more of either readers or writers only increased the value of the whole network without significantly increasing the cost of the whole system over what they paid incrementally to join.
These configurations became known as Peer-to-Peer.
The PCs run the clients that follow a single standard, and have the main data -- the MP3 files. I call these "anonymous distributed serving" configurations. When the Internet is able to better address more devices e. Here are some of the early P2P systems: At most, the anonymous properties of the data make a difference, or which other computers it is connected to.
The applications created with Groove are Person to Person. Other configurations are for connecting particular PCs because of the individuals using, or location of, each PC.
The servers are computers that are often shared by many users, managed by dedicated people, and often dedicated to a particular application. Also, this is a broadcast medium. Its configuration lets it grow without heavy costs to the server for each additional user.
Remember that it is the wide use of standards that helped the Web beat out competing custom systems that had "better" business models with easier ways to charge. Because they used standard equipment on the client side, they could take advantage of commodity pricing.
Web applications I use web applications as a term for custom software on web servers. A problem is that P2P systems use complex software on the PCs. Each client machine is usually a standard "smart" terminal or a personal computer running a standard program acting as one.
If standard protocols are used, there need be no dependencies on any given server, and the serving can be commoditized. Standard software implements a general purpose application that communicates in a standard way.
It is very valuable within corporations and in connecting with their customers.Little data is stored. The most important data is the list of names used to locate other systems (a "buddy list"), and that is often stored on the PC.
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