This article will introduce some advances in Internet transmission technology, as well as the history and problems of Thunder in this process. We are not fully confident to use technology to question the new business model of Thunder. Why did Thunder rise 15 years ago? This has to start with the history of the evolution of the Internet. The data transmission method of the Internet has undergone three major changes. The files are stored centrally in the server. When the user has a download request, a connection request is made to the server, and the required file is downloaded from the server. Represented by HTTP/FTP. HTTP only provides download services. FTP users can also upload files to an FTP server (used frequently in government organizations and college intranets). There are two problems with HTTP/FTP: a-Available resources are determined by the storage capacity of the central server B-server has limited transmission capacity, and a large number of users have poor speed when accessing or transferring large files at the same time. In the early days of the Internet, content was scarce. 20 years ago, there was no content distribution platform such as iQiyi/Netease Cloud. The resources that users can obtain from the central server are few. In addition, the transmission capacity of the backbone network at that time was also very limited (the speed of the telephone line and the optical fiber), and the lower speed and higher cost also limited the spread of resources. Although HTTP/FTP solves the most basic problem of 'there is no channel', the growing needs of the people of 'not getting it' and 'fast speed' have not been resolved. P2P (Peer to Peer), which is a point-to-point transmission method. Each user downloads data and stores it as a server and downloads it for other users. P2P transmission principle Split the entire file virtual aliquot → make bt seeds, record ali file information and tracking information → user get seed → download tool parsing file information and track user address with block file → initiate connection → simultaneously from multiple user computers Download the block file directly (no need to upload to the server) P2P solves two major problems left over by HTTP/FTP: I. "Can't get it": Without the central server, users can share resources and have seeds to download, which enhances resource availability. Individual users' computer hard drives often carry dozens of gigabytes of film and television works, and even promote the rapid development of mobile hard drives. II. "Fast and fast": Each P2P user provides download assistance as a server: the more P2P users, the more servers, the faster the download speed In the third stage, let's talk about it later. Let's take a look at what Thunder does at this time.
Spring-type terminals are new types of spring-type terminals, which have been widely used in the world's electrical and electronic engineering industries: lighting, elevator control, instrumentation, power, chemistry, and automotive power.
If the terminal block is black, one of the possibilities is not necessarily burning black, oxidation may also be black. So how to verify whether it is burnt black? The method we take is to wipe it with a finger. If it can be wiped off, like soot, it is the black substance formed by oxidation, which can only be ground off with sandpaper or a file.
Spring Terminal,Spring Push-In Terminal Block,Spring Clamp Terminal Block,Spring Terminal Block For Pcb Sichuan Xinlian electronic science and technology Company , https://www.sztmlch.com
January 31, 2023