Web hosting
From Wikipedia, the free encyclopedia.
Jump to: navigation, searchan Internet hosting (or Web hosting) is an entity designed to make available Internet web sites designed and maintained by third parties.
From Wikipedia, the free encyclopedia.
Jump to: navigation, searchan Internet hosting (or Web hosting) is an entity designed to make available Internet web sites designed and maintained by third parties.
It provides access to all Internet content in their accounts by webmasters often via an FTP or file manager. For this, he maintains computers 24 hours 24 Internet (web servers for example) via a connection to high speed (several hundreds of Mbps), which are installed software: HTTP server (usually Apache), server messaging, database ... Activity
The main activity of the Internet host is to install its servers in the secure (for power supply corrugated rescued by a generator, an air conditioned room equipped with fire prevention), to maintain them by installing the latest security updates to prevent malicious attacks, to repair in case of failure to install the software technologies desired by customers or wishes to offer (such as Internet programming languages and additional modules of these languages) . IP and DNS
When a visitor requests a page from a web browser, it queries DNS servers know the IP address of the server hosting this site. Once he gets the response, the browser will query the server and request the page. The web server will then search the page on his or her hard drive (if a static page), or to make a script (if a page dynamic), then send it to the browser, which displays on the screen of the visitor.
The main activity of the Internet host is to install its servers in the secure (for power supply corrugated rescued by a generator, an air conditioned room equipped with fire prevention), to maintain them by installing the latest security updates to prevent malicious attacks, to repair in case of failure to install the software technologies desired by customers or wishes to offer (such as Internet programming languages and additional modules of these languages) . IP and DNS
When a visitor requests a page from a web browser, it queries DNS servers know the IP address of the server hosting this site. Once he gets the response, the browser will query the server and request the page. The web server will then search the page on his or her hard drive (if a static page), or to make a script (if a page dynamic), then send it to the browser, which displays on the screen of the visitor.
It may be important to locate where the host has its servers. Most search engines are also based on the location of servers to make referencing a website.
Accommodation Categories
Most offers of accommodation are grouped into broad categories:
Most offers of accommodation are grouped into broad categories:
The shared accommodation or shared: Each server hosts several sites, up to several thousands, and this in order to share the costs. The main advantage is price, the main disadvantage is that the client is not shared by the server administrator, it is often dependent on the goodwill of the host if he wants a particular technology.
In some configurations, shared hosting, the user can be administrator of a virtual server where the site is deployed. However, he continues to share system resources with other clients pooled.
Dedicated hostings: The customer then has its own server, and can generally be administered as desired, which is the main advantage of such offers. The supplier server remains the server owner. The disadvantages are: much higher price than shared hosting, and the skills needed to administer the machine correctly.
The dedicated virtual hosting via a hypervisor, which offers customers the flexibility of a dedicated (the client manages his machine at his convenience) by providing a virtual machine that uses some of the resources of a server (physical) by techniques virtualization (computer).
Dedicated hostings called "managed", with "managed hosting dedicated server" or "turnkey" The client has its own server, but the technicians involved in the host management system. This solution is perfect if you have any technical knowledge on its head. Simply submit its site. This type of accommodation is seeking to adapt to the needs.
The roommate: The host is in its central data processing, space available to the customer, so it can place its own server inside (Mostly in cabinets or racks appointed special " bays). The host also offers the customer a power cord and an ethernet cable so it can feed its server and connect to the Internet. This system is supposed to be cheaper, since the location of the server is not understood, but systems and security badges at the centers of data processing can be more expensive than renting.
Most hosting companies are paying, there are some free, most often it is to call tenders for their paid services, most feature rich and powerful.
In some configurations, shared hosting, the user can be administrator of a virtual server where the site is deployed. However, he continues to share system resources with other clients pooled.
Dedicated hostings: The customer then has its own server, and can generally be administered as desired, which is the main advantage of such offers. The supplier server remains the server owner. The disadvantages are: much higher price than shared hosting, and the skills needed to administer the machine correctly.
The dedicated virtual hosting via a hypervisor, which offers customers the flexibility of a dedicated (the client manages his machine at his convenience) by providing a virtual machine that uses some of the resources of a server (physical) by techniques virtualization (computer).
Dedicated hostings called "managed", with "managed hosting dedicated server" or "turnkey" The client has its own server, but the technicians involved in the host management system. This solution is perfect if you have any technical knowledge on its head. Simply submit its site. This type of accommodation is seeking to adapt to the needs.
The roommate: The host is in its central data processing, space available to the customer, so it can place its own server inside (Mostly in cabinets or racks appointed special " bays). The host also offers the customer a power cord and an ethernet cable so it can feed its server and connect to the Internet. This system is supposed to be cheaper, since the location of the server is not understood, but systems and security badges at the centers of data processing can be more expensive than renting.
Most hosting companies are paying, there are some free, most often it is to call tenders for their paid services, most feature rich and powerful.
Businesses face many challenges at the hosting infrastructure and applications. Torn between performance requirements for their vital activity and constraints in terms of spending and investment, they are turning more often to focus pooling solutions and industrialization. Virtualization, cloud computing and SaaS applications are increasingly considered as alternatives they should consider carefully
The application hosting in 2009, according to a study conducted by Markess International with 150 companies, the application areas most affected by external hosting sites are web portals, followed by applications management customer relations, human resources, and extranets. To a lesser extent, because more often managed directly by the management computer applications are messaging, security, storage and backup. Followed in descending order of citations, but very dependent sectors of activity:
The application hosting in 2009, according to a study conducted by Markess International with 150 companies, the application areas most affected by external hosting sites are web portals, followed by applications management customer relations, human resources, and extranets. To a lesser extent, because more often managed directly by the management computer applications are messaging, security, storage and backup. Followed in descending order of citations, but very dependent sectors of activity:
The applications of electronic commerce (e-commerce), intranets and collaborative applications including not only messaging functionality but also calendar, task management, etc.., Applications and content management;
The application of business management and management of sales forces, the ERP (Enterprise Resource Planning) applications, finance, production, and platforms for application development.
The application of business management and management of sales forces, the ERP (Enterprise Resource Planning) applications, finance, production, and platforms for application development.