Search Engine with Web Crawler
A web crawler (also known as a Web spider or Web robot) is a program or automated script which browses the World Wide Web in a methodical, automated manner.
This process is called Web crawling or spidering. Search engines use spidering as a means of providing up-to-date data. Web crawlers Download and will index web pages to provide fast searches.
A Web crawler starts with a list of URLs to visit, called the seeds. As the crawler visits these URLs, it identifies all the hyperlinks in the page and adds them to the list of URLs to visit, called the crawl frontier. URLs from the frontier are recursively visited according to a set of policies.
There are two important characteristics of the Web that generate a scenario in which Web crawling is very difficult: its large ....