"1C-Bitrix: Marketplace" - Internet-shop of gifts. 1C-Bitrix: marketplace. Typical online stores. Online store of perfumery and cosmetics. Medical clinic website. New standard online stores. Consulting company website. Online clothing store. Launch of an online store in 4 hours. Online store of building materials.
"Website development" - Works done in this genre often lack a scientific approach. Plan: 1. World Wide Web. Method: continuous observation and recording. Web site creation. Theme of work: "Web-site". Project. A distinctive feature is the absence of a quantitative research methodology. Experimental work describes a scientific experiment with a known result.
"1C-Bitrix" - Ready-made solutions - Internet shops. Test all product functionality for free. CMS capabilities. 1C-Bitrix: School website. Ready-made solutions - Information portal. Denis Donchenko is a manager of the business development department of 1C-Bitrix. Online learning Interactive schedule Social network Safety.
"Site usability analysis" - The concept of usability. Links. Usability metrics. Usability of online stores. The user's willingness to wait for the download. Where have I been. A little about the content. Response time. Usability components. Home page. Different types of browsers. When to break the rules. Access for users with disabilities.
"3D Sites" - Economic Visualizations. Visualization of goods. Applicability limits 3D. Web services for the visualization of 3D models. Nokia phones. Visualization web services. Main reasons. 3D games. Panoramas. 3D interfaces. Features of Away3D. 3D web projects of large companies. Zoom-ing. Flash 3D engines. 3D carousel.
“How to create your own website” - Hypothesis. Cons: Requires a lot of knowledge and time. There are free and paid CMS. Cons: Complete dependence on the service. Unknown. How to create a website? Website builders, CMS (Site Edite, Joomla, WordPress, Drupal, etc.). Services for creating websites. No need to buy hosting and register a domain.
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A server is a computer that is constantly on and performs certain actions specified by users. It is located in the server room, where specialized personnel monitor and maintain its performance. Since the operation of this device is continuous, a huge stream of information is constantly processed and stored. In addition, the status of the data is monitored and all sorts of system and server problems are eliminated.
Functions
The server is divided into several types, each of which performs its own function, which is its endless work. The so-called web server contains all the sites that are on the Internet and provides users with easy access to all pages. In fact, he is an intermediary between you and the site.
The game server collects, stores and processes information from video games and video information. It provides communication between players and allows communication in a particular game. A striking example of the application of this server is the popular game "Counter-Strike".
The mail server works on incoming and outgoing emails. Often, in order to find the necessary site on the Internet, the familiar "www" is used. With such a request, the www server is included in the work, which instantly processes the information and gives the result.
A file server is necessary for storing, searching and distributing information. It stores files that the Internet contains, including music files, pictures, various documents, and so on.
All information and data that this computer contains must be secured, and for this there is also a separate protection server.
When a computer or the Internet is running, several servers are simultaneously involved. With the help of one, communication between all the others is carried out. It happens in the following way. One server communicates with others to work together to quickly get things done. All information is provided in accordance with certain standards of the global web.
As you can see, the server is an indispensable device that provides the Internet, organization between computers, as well as between users. The server services provided are not as visible, but are urgently needed.
Server, or server software, is a computer program or device that provides functionality for other programs or devices, so-called "clients".
There are the following types of servers:
Proxy server
A proxy server is an intermediary between a client program (usually a web browser plays this role) and an external server (another server on the Internet), filters requests, improves the performance and quality of the connection. The client connects to the proxy server, requesting some services, such as a file, connection, web pages from another resource - the server interprets and transmits the request.
Server types Mail server
Mail servers transmit data of mail clients through local and global corporate networks, as well as via the Internet. Provide messaging and data storage.
Server platforms
The term is often used synonymously with the operating system. The server platform is the main hardware or software for the system and acts as the “engine” that drives the server.
Web server
The web server is used to exchange data between the user's web browser and the network via the http protocol. It performs a number of the following functions: automates the work of web pages, keeps a log of access to network resources, is responsible for user authentication and authorization, and supports https to ensure a secure connection.
Applications server
The application server is conventionally referred to as middleware, since the server data occupies a significant part of the computing territory between the database servers and end users.
FTP server
One of the oldest Internet services: File Transfer Protocol allows you to securely move one or more files between computers, while ensuring the security and privacy of files, and control of data transfer.
Collaboration Server
Software designed to enable users to collaborate, regardless of their location, over the Internet or corporate intranet.
Virtual server
In 2009, the number of virtual servers exceeded the number of physical servers. Server virtualization has become commonplace in data processing today.
Telnet Server
A Telnet server allows users to connect to remote machines and perform tasks on the remote computer.
Open Source Server
Open source server operating system. It supports common email protocols (IMAP, SMTP, and POP3) and can be easily integrated with many existing webmail systems. The server has flexible anti-spam protection, anti-virus protection of all incoming and outgoing e-mail. Open source software is an important part of many IT infrastructures.
Hello dear readers of the blog site. Earlier in the article, I mentioned such a thing as a server, but did not focus on this in detail. Well, the server is the server (like, everyone already understands). Because of this, it seems to me, a misunderstanding could arise, and therefore the time has come to rectify the situation.
So what is a server? In fact, this is a thing (and sometimes a program) without which the Internet would not exist. In general terms, a server is a workstation (essentially a regular computer) that works for the most part without human intervention(unless its initial configuration is required).
Its work consists in executing special service programs ("serve" means to serve), which often determine the purpose of this device. Those. in fact - this is a business computer... It is closely related to the concept of a server, which we have already talked about, because it is on them that all Internet sites are located. Clear? No? Well, then a little more detail ...
Server is a service computer
Confusion in the minds of users arises mainly because the term server can be understood as hardware part of a computer (often quite specialized - with a large amount of RAM and solid-state memory, a powerful server processor, but without a mouse, keyboard and monitor - just a box, often rack-mounted):
Servers are distinguished by the "power" (and capacity) of their constituent components. When even the most advanced machine lacks the capabilities of even the most advanced machine to perform a task (for example, hosting a heavily visited site) (with a maximum of memory and processors), then it is possible to distribute the load using a bunch of servers and the corresponding software.
What are servers most often used for?
Well, for example, there are game servers. They are "raised" to play online games (such as Dota, Warcraft, etc.) at once to a large number of people connected to it from their PCs. There are also home servers, for example, for storing and distributing multimedia to households.
Still, the most common are probably "office computers" that host sites. They live on the so-called hosting and it is worth talking about them in more detail.
Web server - what is it and why do we need hosters?
The hosting uses software called web server(the most famous of these, I think, is Apatch). One hardware unit (physical computer) can host from one to hundreds of web-server programs, and each of them can host from one to hundreds of sites. Why is this being done and why is all this needed at all?
Look. You wanted to create a website. Created (let's say on your local web server, as I wrote above). What's next? The site should be visited by people, but how will they get on it? Right, via the Internet? So your computer should always be on (day and night) and always have a wide Internet access channel? But it's terribly difficult and expensive after all.
The way out is exactly in using the services of a hosting provider, which has a whole bunch of servers in special rooms (data centers), working around the clock and connected to the Internet. It is he who rents them, or he can place your server there for money and monitor it as if it were his own. Moreover, there are options for all occasions:
- For small and little-visited sites - the cheapest rates of shared hosting. Imagine that hundreds of sites are hosted on a single piece of hardware (office computer). As a result, you have to pay little, but neighbors can cause anxiety, for example, taking too many server resources (processor time, RAM, or clogging up the communication channel with the Internet) for their tasks.
- For more or less visited sites, you can take a virtual dedicated server (VPS - there can again be several of them on one hardware unit), thereby obtaining a guaranteed amount of server resources and not noticing the influence of neighbors. This VPS installs its own operating system and rises the required number of web-server programs. But you need to be able to manage all this, or pay.
- For sites with serious traffic and load, one or several (working in parallel) physical servers (hardware units) are taken. Here it will not be possible to do without an administrator (remote) manager and promptly responding to the problems of this entire economy.
- Colocation - for the same purposes as described in the previous paragraph, many use their own "office computers", but place them in the hoster's data center in order to get round-the-clock Internet access and guarantee the availability of power, extinguish fires and monitor other problems with " iron ".
Thus, without servers, there would be no sites (blogs, social networks, forums, search engines, portals, etc.), which means there would be no Internet itself. Oh how!
Good luck to you! See you soon on the pages of the blog site
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In terms of hardware, a server is a computer that is capable of providing some services to other computers connected to it. It is assumed that computers are somehow connected to the server and to each other.
Choosing the right server for your organization is not an easy task. The wide choice of server systems requires IT leaders to realistically assess their computing power, scalability, reliability, and availability requirements. They should clearly articulate server requirements, explore support options, and identify future upgrade costs. In addition, one must be well versed in the variety of products offered on the market.
Servers can be classified, for example, both by the class of tasks to be solved and by the number of clients served. The second approach distinguishes between workgroup-scale servers; department medium-sized organizations (midrange); enterprise.
It must be said that since the configuration of servers varies greatly within each type, no clear boundaries can be set between them. Powerful low-end computers can act as entry-level servers in the senior allied class, and vice versa.
Note that there are quite a few classifications of servers, and all of them overlap to one degree or another. So, manufacturers often subdivide their servers according to the type of execution: ultra-thin (blade), classic floor-standing (tower), designed for installation in racks (rack) and with a high degree of scalability (super scalable). Ultra-thin computers not only save space for each server, but also reduce power consumption. Floor-standing servers provide high flexibility in the placement of components in the chassis and are easily expandable. Rack servers are designed for consolidation of server systems in data centers and for use with external storage subsystems. They can be effectively used for cluster solutions when the servers themselves, external memory and additional devices are located in the same racks. Highly scalable servers are typically designed for large enterprises and can handle almost any enterprise challenge.
Some common types of servers are described below, classified according to the class of their tasks.
Web servers
A web server is like a robotic buffet. The client asks for something — in this case, a file — and the Web server receives the file and sends it to the client. In most cases, the original Web server does nothing with the file; it simply passes it off to the client. Today's Web servers process a large number of requests simultaneously and respond quickly to them; in addition, they are capable of handling requests in more sophisticated ways than simply sending a document.
Application servers
The application server is characterized by advanced information processing capabilities, and the interaction with the client becomes similar to the work of the application. In marketing, the term "application server" usually refers to a vendor-supplied complete solution that contains all the required technology components. For some organizations, this holistic approach to building an application server makes development easier by unifying development models and centralizing support.
Database servers
Database servers are used to process business transactions and user queries. As e-business expands, the databases used grow in complexity and size. A key characteristic of a database server is its ability to quickly retrieve and format data. The computing power and scalability of the system play a decisive role in this.
File servers
The file server does exactly what its name suggests: it provides communication between networked stations and gives users access to the files they need to work. In addition, the file server usually restricts unauthorized access to data. Actually, the difference between a file server and an application server is that the former stores programs and data, while the latter executes programs and processes data.
"Wireless" server
In its simplest interpretation, such a computer could be a typical Web server or application server, which simply knows how to transmit documents written in the standard language for wireless devices. Often this is the Wireless Markup Language (WML). Adapting a Web server to act as a wireless server that can handle WML-type documents is usually just a matter of training the server to recognize those documents. The web server only needs to tell the client that the document is in a wireless format, and that's where it ends.
Proxy servers
The two main functions of this computer are as follows. First, it acts as an intermediary, helping users get information from the Internet while protecting the network. Second, the proxy server can store frequently requested information in the cache memory on the local disk, quickly delivering it to users without having to access the Internet again. The proxy server has become a very popular way to connect corporate intranets to the Internet.
Firewalls
Proxies can be configured to accept or reject certain types of network requests from both the local network and the Internet. In this configuration, the proxy server becomes a firewall - a firewall. A firewall, as its "combat" name implies, is a security tool whose missions are much like border guards do: inspect every piece of data that tries to cross a network border.
Mail servers
Like a proxy server, a mail server (sometimes called a messaging server) must handle both inbound and outbound requests. One of the tasks of the mail server is to read the addresses of incoming messages and deliver the correspondence to the appropriate mailboxes within the intranet. Depending on the sophistication of the mail server, it can give the administrator more or less control over the local mailboxes, the types and sizes of messages they can receive, the automatic replies they can compose, and so on.
DHCP servers
Currently, many local area networks (intranets) also use the TCP / IP protocol, but sometimes the original exchange protocols such as NetBEUI or AppleTalk are used. Computers can be assigned IP addresses manually, or a so-called Dynamic Host Configuration Protocol (DHCP) server is launched on one of the machines, which automatically assigns an IP address to each local machine. The main advantage of a DHCP server is the freedom to change the configuration of the local network when it expands, adds or removes machines (for example, laptop PCs).
FTP servers
These servers, based on the File Transfer Protocol, have become the de facto standard for moving files on the Internet many decades ago. FTP servers support the work of simple file managers - clients. Sophisticated FTP servers give the administrator great control over file connection and sharing rights, file sharing types, and location. Configurable resources allocated to a series of server connections, limits on the amount of data transferred and the minimum transfer rate, and the like, are increasingly popular tools to help improve the security of FTP servers.
Print servers
These servers allow all computers on the network to print documents to one or more shared printers. In this case, there is no need to complete each computer with its own printing device. In addition, by taking all the trouble of printing documents, the print server frees up computers for other work. For example, a print server stores documents sent to be printed on its hard drive, queues them up, and outputs them to the printer in order of priority.
Remote access servers
These systems allow communication with the office network via telephone lines. Being with a laptop somewhere far from the office, you can always get the file you need, check if e-mail has arrived, in a word, get any necessary information. In the presence of good communication channels, the difference between working in the office and outside in this case is almost imperceptible.
Fax servers
In a sense, fax servers serve as a bridge between the old and new ways of doing business. In many ways, the fax server is similar to the previously mentioned mail server. Both of these server types are bridges between outgoing and incoming messages, and both must route incoming messages to the specified address. In the case of mail servers, this is always the mailbox of a specific user. In the case of fax servers for small, single-user environments, it is often assumed that the receiving computer is the destination, so the mailbox model does not work here. On the other hand, fax servers designed for corporate use have some parallels with the e-mail server model, providing delivery of incoming faxes to specific addresses assigned to users.
Server consoles
There are a huge number of devices defined by the term appliance server. It is not immediately clear what is meant (appliance is translated as "apparatus, appliance, device, device", including as a household electrical appliance) and how such a server differs from other servers. Generally speaking, the word "appliance" does not really refer to a particular type of server per se; here we mean the type of picking and delivery. In fact, the term simply means any type of server that is sold pre-configured, configured, and ready to plug into the network. For example, if a server is being offered that is described as a Web hosting device, then a Web server (also called an application server) is being marketed as a plug-and-play device because it is suitable for installation on an existing network. There are also traffic shaping set-top boxes on the market, VPNs, caching devices, etc.
