Monday, 16 August 2021 15:02

What is a server. Basic concepts

proxy-seller proxy-seller pixabay

When answering the question "What is a server?" several definitions can be given. In a broad sense, a server is a hardware and software complex that allows a client to access the Internet.

In a narrower sense, a server is a collection of specialized programs: utilities, heterogeneous services, packages, etc. Some other users and not only they mistakenly call large sites or computers servers, but this is not entirely correct.

The main task of the server is to ensure the correct operation of one or more websites. The client (browser) requests information to obtain data of certain resources, which are indicated by URLs. In response to the request, the server transmits the necessary information via the HTTP protocol to the browser. Thus, the client gets access to the resource of interest. The server is engaged in serving any number of clients, flawlessly performing all their tasks in the order of a virtual queue.

Today, several large servers are known that provide the operation of the entire World Wide Web. These include: IIS from Microsoft, nginx, lighttpd, Google Web Server, Rootage, Cherokee, THTTPD, Resin, and Apache. Moreover, Apache is considered the most widespread server, accounting for more than half of the server market.

Server types

There are several types of servers that differ in their functions:

  • Database servers play a dominant role in most enterprises, so they receive close attention from manufacturers, sysadmins, engineers and other professionals. Such servers work almost everywhere all the time, without downtime;
  • Mail servers are designed to perform all types of operations related to e-mail: sending, receiving, storing letters, etc .;
  • File servers serve to centralize the storage of various files and organize access to them. These servers have a powerful disk subsystem that provides basic functions as well as data protection;
  • Application servers work with the application server side;
  • Web servers are designed for optimal resource allocation among clients on the WAN;
  • Backup servers are used to preserve the backed up data;
  • Communication servers are divided according to the characteristics of the tasks they perform: firewall - ensures the security of the infrastructure, dhcp servers - dynamically allocate ip-addresses, proxy servers (for example, such proxy-seller) - perform the function of buffering requests, VPN servers - are needed to create private virtual networks.

Purpose of servers

In order to understand what servers are needed for, let's try to imagine the work of at least one enterprise working via the Internet. In this case, the server makes it possible to combine all the resources of the employees of a given enterprise into a single data array that is available to any employee. A kind of multi-user center is being created, which makes it possible to significantly simplify communication between employees, which increases the speed of work and its quality. In addition, in the process of work there are more opportunities for correcting errors, which leads to a decrease in their total number.

Ordinary users use the server to receive and send e-mail, exchange files, communicate on social networks, receive the necessary information - in general, working on the Internet is unthinkable without servers.


The world of technology

Stanley Charles Review – Get the Right Ingredients for Trading Success

Stanley Charles Review – Get the Right Ingredients for Trading Success

Investing in the financial markets is considered to be the golden ticket that can help you make more money. Many people are under the assumption that having more capital can make you a better trader, but that is not necessarily true. As a matter of fact, you need to have access to the right tools, data and platform to make a decision. In this Stanley Charles review, I will talk about some of the primary offerings of the broker in which it can assist you in achieving the success you want. Read More
PMM Limited Review – An Efficient and Secure Trading Solution

PMM Limited Review – An Efficient and Secure Trading Solution

When you first start trading, one of the most vital things you need to figure out is where to trade. These days, there is a horde of brokers offering their trading services, but not all can be trusted or relied on. You need a good and decent platform to enjoy secure and efficient trading and it is brokers like PMM Limited that can offer it to you. Read More
Innovations in Art Conservation - Ecological Transformations in Museums

Innovations in Art Conservation - Ecological Transformations in Museums

In an era where ecological awareness is increasingly prevalent, museums worldwide are searching for ways to reduce their carbon footprint while preserving valuable artworks. New research by an international team of experts from Poland and Norway has brought groundbreaking discoveries that could significantly change conservation practices in cultural institutions. Read More
Which proxy servers are worth choosing?

Which proxy servers are worth choosing?

If you want to ensure your privacy and security online, you can choose many different solutions. The really effective ones include proxy servers. Due to the extremely rich offer of this type of services, it is worth knowing which proxy servers actually deserve attention. We tell you what to take into account when choosing to make the best decision. Read More
  • 1