A report on Web server, Web crawler and Hypertext Transfer Protocol

PC clients communicating via network with a web server serving static content only.

High-level architecture of a standard Web crawler

The inside and front of a Dell PowerEdge server, a computer designed to be mounted in a rack mount environment. It is often used as a web server.

Evolution of Freshness and Age in a web crawler

URL beginning with the HTTP scheme and the WWW domain name label

Multiple web servers may be used for a high traffic website.

Web server farm with thousands of web servers used for super-high traffic websites.

An HTTP/1.1 request made using telnet. The request message, response header section, and response body are highlighted.

ADSL modem running an embedded web server serving dynamic web pages used for modem configuration.

First web proposal (1989) evaluated as "vague but exciting..."

The world's first web server, a NeXT Computer workstation with Ethernet, 1990. The case label reads: "This machine is a server. DO NOT POWER IT DOWN!!"

Sun's Cobalt Qube 3 – a computer server appliance (2002, discontinued)

PC clients connected to a web server via Internet

PC clients communicating via network with a web server serving static and dynamic content.

Directory listing dynamically generated by a web server.

Chart:
Market share of all sites for most popular web servers 2005–2021

A web server is computer software and underlying hardware that accepts requests via HTTP (the network protocol created to distribute web content) or its secure variant HTTPS.

- Web server

A user agent, commonly a web browser or web crawler, initiates communication by making a request for a web page or other resource using HTTP, and the server responds with the content of that resource or an error message.

- Web server

As the crawler visits these URLs, by communicating with web servers that respond to those URLs, it identifies all the hyperlinks in the retrieved web pages and adds them to the list of URLs to visit, called the crawl frontier.

- Web crawler

A web browser, for example, may be the client whereas a process, named web server, running on a computer hosting one or more websites may be the server.

- Hypertext Transfer Protocol

Other types of user agent include the indexing software used by search providers (web crawlers), voice browsers, mobile apps, and other software that accesses, consumes, or displays web content.

- Hypertext Transfer Protocol

Endless combinations of HTTP GET (URL-based) parameters exist, of which only a small selection will actually return unique content.

- Web crawler

1 related topic with Alpha

HTML

0 links

Standard markup language for documents designed to be displayed in a web browser.

Web browsers receive HTML documents from a web server or from local storage and render the documents into multimedia web pages.

The result is still invalid markup, which makes the document less accessible to other browsers and to other user agents that may try to parse the document for search and indexing purposes for example.

However, they are most often delivered either by HTTP from a web server or by email.