Virtual hosting refers to dividing the network server into independent spaces for lease to users, which are used to place sites, application components, etc., and provide site functions and data storage and transmission functions necessary for website construction.
The emergence of virtual host technology is a major contribution to Internet technology and a blessing to the vast number of Internet users. Because multiple virtual hosts share the resources of a real host, the hardware costs, network maintenance costs, and communication line costs for each user are greatly reduced, and the Internet has truly become a network that everyone can afford!
The so-called virtual host, also called "website", is to divide a server running on the Internet into multiple "virtual" servers, each of which has an independent domain name and a complete Internet server (supporting WWW, FTP, E-mail, etc.) function. Different virtual hosts on a server are independent and managed by users themselves.
But a server host can only support a certain number of virtual hosts, when the number is exceeded, users will experience a sharp drop in performance. Virtual hosting technology is a technology used by Internet servers to save server hardware costs. Virtual hosting technology is mainly used in HTTP services. It logically divides a certain or all service content of a server into multiple service units, which are displayed as multiple servers externally. , so as to make full use of server hardware resources. If the division is at the system level, it is called a virtual server.
What should I pay attention to when buying web hosting?
1. Stability of space
Stability is the primary factor for renting website space. If a website happens to be crawling content by search engine spiders, the space cannot be accessed normally, and search engines will not be able to index your webpage.
Therefore, it will bring immeasurable losses to the website, because the traffic from search engines accounts for a large part of the website traffic. Therefore, this is also required to carry out the conditions of network marketing itself. Many companies use free and low-stable space for the sake of temporary cheapness, which is not advisable.
2. The function of space
If the program and database space used by the website are not supported, the popular dynamic program after the website is uploaded cannot run. A lot of newbies may encounter this because they don't know much about programs or databases. For example, DZ, which is a PHP program and a MYSQL database, generally pay attention to supporting PHP and MYSQL when choosing a space. At the same time, it is not necessary to support as many programs as possible. For example, many programs in MSSQL cannot be used now, and it is a waste of resources, so you can choose one that is sufficient. The less supported functions, the cheaper it will be. Security is also higher.
3. The size of the
space The principle of choosing the size of the space is not to waste it but also to leave room for the further development of the website. If you have a website like a blog, you don't need to choose a large space. For a large website, the webmaster should tailor it according to his own website.