Web hosting service
Webhosting or Nethosting is the provision of web space and accommodation ( hosting) web pages on the Web server of an Internet service provider ( ISP).
Technology
The web host provider is called - usually for accounting - its resources. These resources include particular provision and operation of the host server and its network connections. Often finance web hosts also through advertising, which is connected to the site.
The scope of web hosting services varies greatly. The deals start with a simple website on server with scripting language support (eg, CGI, PHP) and database backend (eg MySQL ) to packages that include a web content management system (eg. TYPO3, Joomla ), monitoring, data storage, statistical analysis, load balancing or high availability. Here it is important to both the software as well as to the availability or the service during failures.
The market is confusing and subject to constant changes. For orientation, industry portals, and regular reviews on the providers in professional journals can be helpful. There are many product categories and one can of shared hosting on VPS cloud hosting to get everything. Above all shared hosting products are particularly favorable, but you want to get more professional packages, you also have to pay more if necessary. Usually it is possible to compromise between price and performance. Important criteria for the selection are recurring and monthly costs, the benefits, the connection speed and the amount of available services.
Another way of web hosting is cloud hosting. As cloud hosting is called a technology of hosting, which is characterized mainly by its flexibility. The data is directly hosted in the cloud, which saves a lot of administrative work, but also more flexible distributed resources.
Types of Hosting
There are also web hosting services that accept only certain types of files, such as photo - sharing services only image files and video portals just movies.
Uptime and Availability
Availability, or uptime (from the English for uptime ) means, when web hosting, the time in which a site online that is publicly accessible. The uptime is usually given as a percentage and for a one-year period. The uptime is calculated with the following formula: Total time = 365 days per year * 24 hours per day * 60 minutes per hour = 525,600 minutes per year.
An uptime of 99 % means, for example, that a site 3.65 days a year is not available. Or in other figures 7:20 hours per month or 1.68 hours per week. The time in which a site is not available is called Downtime The following table shows the uptime and the resulting downtime of a website.
* One month equals 30 days here.
If the server of a web hosting provider fail for a certain time there is a downtime. This is usually caused by power failures or technical malfunction of a server. Most then all the websites that are hosted on the affected server unavailable.