IDC--（Internet Data Center)互联网数据中心, the main services include machine rental, server hosting, cabinet rental, computer room rental, dedicated line access and network management services. The IDC business in a broad sense is actually all the services provided by the data center. Customers rent the servers and bandwidth of the data center, and use the technical strength of the data center to achieve their own software and hardware requirements, build their own Internet platform, and enjoy a series of services provided by the data center. (The most popular now are cloud servers, such as Alibaba Cloud and Amazon Cloud)
ISP--(Internet Service Provider)互联网服务提供商, that is, telecommunications operators (such as mobile, telecommunications, etc.) that comprehensively provide Internet access services, information services, and value-added services to the majority of users.
ICP--(Internet Content Provider)互联网内容提供商, a telecom operator that comprehensively provides Internet information services and value-added services to users. According to the State Council of the People's Republic of China Order No. 292 "Administrative Measures for Internet Information Services", the state implements a licensing system for ICPs that provide Internet information services. Therefore, the ICP certificate becomes the license for website operation, and the operating website must apply for the ICP certificate, otherwise it is an illegal operation. Therefore, applying for an ICP certificate is a requirement for the legitimate operation of a corporate website.
LVS--(Linux Virtual Server)的简写，意即Linux虚拟服务器，是一个虚拟的服务器集群系统. LVS clusters are adopted IP负载均衡技术and based on 内容请求分发技术. The scheduler has a good throughput rate, and transfers requests to different servers for execution in a balanced manner, and the scheduler 自动屏蔽掉服务器的故障forms a high-performance, high-availability virtual server from a group of servers. The structure of the entire server cluster is transparent to the client, and there is no need to modify the client and server side programs. For this reason, transparency, scalability, high availability and manageability of the system need to be considered in the design.
CGI--(Common Gateway Interface)通用网关接口. The CGI specification allows Web servers to execute external programs and send their output to Web browsers. CGI turns a set of simple static hypermedia documents from the Web into a complete new interactive media Interactive, php is written in C language, so the server is called php program by CGI)
CDN--(Content Delivery Network)内容分发网络, Relying on the edge servers deployed in various places, through the 负载均衡、内容分发、调度functional modules such as the central platform, users can obtain the required content nearby, reduce network congestion, and improve user access response speed and hit rate. The key technologies of CDN mainly include content storage and distribution technology. The basic principle of CDN is to widely use various kinds 缓存服务器of cache servers, and distribute these cache servers to areas or networks where user access is relatively concentrated 全局负载技术. The server responds directly to user requests. (need to back up the code to each cache server)
GSLB--(Global Server Load Balance，全局负载均衡）As the core part of the CDN system architecture, it is responsible for traffic scheduling. Most applications of DNS-based GSLB that use load balancing technology access the destination host through the domain name. When a user sends any application connection request, it must first obtain the DNS request. The IP address of the server, DNS-based GSLB makes intelligent decisions in the process of returning DNS resolution results, and returns an optimal service IP to the user. The user application flow is unchanged from without GSLB. This is also the mainstream GSLB technology on the market.
BOSS--(Business & Operation Support System，BOSS)是业务运营支撑系统. The so-called BOSS is divided into four parts: billing and settlement system, business and accounting system, customer service system and decision support system. From a business perspective, BOSS is a framework to carry business systems, CRM systems, and billing systems. Realize vertical and horizontal management in a unified framework. The system was first developed and evolved from the billing system of the telecommunications department. Its basic functions include customer data management, product management, user order management, billing, billing, settlement, etc. It is responsible for registering customer data, managing the provision of user ordering services, Real-time calculation of the consumption amount of services (mobile phone, fixed-line user calls, on-demand viewing, broadband traffic and time, etc.) according to the tariff standards of different products and packages, quasi-real-time and regular calculation of user bills, real-time or regular settlement of user various consumption costs. (system used by operators such as telecom and mobile)