Server Technologies
A web server refers to a service program that provides display of HTML and objects (images, etc.) to a client software web browser in accordance with HTTP, and a server computer on which the service operates. In a broader sense, it refers to programs and computers that communicate with client software via HTTP.
The basic processing flow of a web server is as follows.
First of all, the web server is always connected to the network, and is always ready to receive incoming data from clients. When data is received from a client, it receives it, passes the data to the HTTP request analysis process, and returns responce data according to the analyzed request.
The specific operation of the web server is as follows when an HTTP request is received
POST /index.html HTTP/1.1
Host www.examle.com
Content-Type:application/x-www-form-urlencoded
name=fooThe behavior is to return the following HTTP response.
HTTP/1.1 200OK
Content-Type:text/html
Connection:close
<html>
<body>hello foo!!</body>
</html>The Apache server and nginx are two prominent web servers.
This blog will provide more details about these web servers.
Technology Topic
The web server is always connected to the network and is ready to receive tangential loss from clients at any time. When data is received from a client, it receives it, passes the data to the HTTP request parsing process, and returns response data in response to the parsed request.
One of the characteristics of a web server is that it handles requests from multiple clients concurrently. There are two main types of multiple request processing: “prefork type” and “event type.
The prefork type uses the OS’s ability to switch multiple programs (processes) at high speed and act as if they are running in parallel to process requests from multiple clients concurrently. In this case, the web server spawns multiple processes, and each process handles one connection. The OS handles the process switching, so the web server only needs to handle its own requests in each process.
In the event-driven model, asynchronous I/O is used to handle multiple requests in a single process. This means that another process is executed while the CPU waits for slow data exchanges, such as network or disk accesses. nginx is a typical web server that uses event-driven processing.
In this article, we will discuss the installation and configuration of Apache server and LAMP, focusing on the Linux and Mac cases.
nginx (engine x) is a software that is gaining popularity as a web server, load balancer, and reverse proxy. nginx is a web server, load balancer, and reverse proxy, all of which are essential components of a web system that is usually accessed through a browser. Web servers, load balancers, and reverse proxies are all essential components of web systems that are usually accessed through a browser.
Web servers such as CERN httpd and NCSA HTTPd were used in the web world, but both have been replaced by the Apache HTTP Server (Apache). After that, various web servers such as Microsoft Internet Information Server (IIS), LightSpeed, lighthttpd, etc. were newly developed and used. nginx is one of them.
This section describes examples of how servers described in “Server Technology” can be used in various programming languages. Server technology here refers to technology related to the design, construction, and operation of server systems that receive requests from clients over a network, execute requested processes, and return responses.
Server technologies are used in a variety of systems and services, such as web applications, API servers, database servers, and mail servers. Server technology implementation methods and best practices differ depending on the programming language and framework.
Discord is a free voice, text and video chat tool developed and operated by the US software company Discord Inc. Discord was originally developed as a communication tool for gamers, but its ease of use and versatility has led to the formation of online communities in a variety of areas, and it is now used by many ordinary users as well. server, and users can also create their own servers or join servers created by other users, and within a server it is possible to create subspaces such as ‘text channels’ and ‘voice channels’, which can be tailored to a specific purpose and It is possible to switch channels and communicate according to specific topics and objectives.
Rust is a programming language developed by Mozilla Research for systems programming, designed with an emphasis on high performance, memory safety, parallelism, and multi-threaded processing. It is also a language focused on bug prevention through strong static type checking at compile time.
This section provides an overview of Rust, its basic syntax, various applications, and concrete implementations.
Raspberry Pi is a Single Board Computer (SBC), a small computer developed by the Raspberry Pi Foundation in the UK. Its name comes from a dessert called “Raspberry Pi,” which is popular in the UK.
This section provides an overview of the Raspberry Pi and describes various applications and concrete implementation examples.
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