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This article mainly introduces what belongs to peer-to-peer in computer access information technology, the article is very detailed, has a certain reference value, interested friends must read it!

P2P belongs to peer-to-peer in access to information technology. P2P (peer-to-peer network) is an Internet system that has no central server and relies on user group (Peers) to exchange information. In P2P architecture, each node is equal, and each node not only acts as a server to provide services for other nodes, but also enjoys the services provided by other nodes.

The operating environment of this tutorial: windows7 system, Dell G3 computer.

P2P belongs to peer-to-peer in access to information technology.

P2P (Peer-to-Peer) network, namely peer-to-peer network, is an Internet system without central server and relying on user group (Peers) to exchange information. It is a kind of distributed network. Generally speaking, the status of each node in the network is equal. Different from the central network Chand S system (Client-Server) with a central server, each node of a peer-to-peer network is both a client and a server. Nodes rely on the connection between each other to exchange information, and each node shares the resources they have (such as disk storage space, network bandwidth, processor utilization, etc.) to provide services and content. Therefore, when the new node joins the network, the capacity of the whole system increases accordingly.

Compared with Cpact S network model, P2P network is especially suitable for file sharing: in Cumber S structure, resources are stored in a central server, and under a fixed bandwidth, the more users who request downloads, the slower the data transmission per user. For P2P networks, many nodes store a copy of the same file, and when someone needs to download it, they can download it from multiple nodes at the same time, and the downloaded files can also be uploaded to other downloading nodes at the same time, so the larger the network, the faster the speed. P2P network makes full use of the bandwidth of other peers in the network, not just the bandwidth of the file source node.

The success of file sharing makes P2P networks popular, but because most of the shared files are pop music and movies, the problem of infringement also makes P2P networks criticized. In a typical P2P network, data can be copied at will and copies can be saved at will. But it is clear that assets cannot be copied at will, and there are multiple copies. The bitcoin project created by Satoshi Nakamoto retains the "distributed" characteristics of P2P networks and solves the problem of asset transfer in P2P networks: assets flow between different addresses rather than simply "copying"; miners will verify the whereabouts of assets in the process of trading information. The following is a detailed description of Bitcoin's P2P network, which may provide inspiration for the use of blockchain technology to solve issues such as copyright protection.

Limitations and tradeoffs of P2P Network

P2P network has many advantages, such as fault tolerance, scalable transmission speed, data security and so on, but in block chain projects, this is at the cost of low transaction processing capacity. At present, in the fierce public chain competition, many projects show their skills in transaction processing capabilities (for example, claiming that "more than 10,000 transactions can be processed per second", etc.), which also shows that this is a problem to be solved in the existing blockchain technology.

In fact, as more and more nodes are added to their networks, the transmission delay of information between nodes gradually accumulates, and it takes more and more time for information to spread to the whole network. Therefore, P2P network projects need to make a tradeoff between low transaction throughput and centralization.

When a small number of "super nodes" are set up to check the transaction information, the processing efficiency of the transaction information can be improved, but at the same time, the network becomes centralized. In a network where all nodes have the same status, all nodes check the transaction, which will result in a certain degree of repetitive work and waste of resources.

Blockchain technology is exciting and has a lot to do with its decentralization, which is largely based on P2P networks. P2P network is a very balanced idea, but it also needs to pay a certain amount of resources as a price. There is still a trade-off between a balanced network and improving work efficiency. To build an efficient peer-to-peer network, we need to continue to make progress in communication technology.

The above is all the contents of the article "what belongs to peer-to-peer in computer information technology". Thank you for your reading. Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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