The web scenario has evolved with such startling alacrity that recognizing and distinguishing one technological development while still being aware of the just concluded one; is a humongous challenging task. Search engines are increasingly being modified into hybrid entities that sniff out duplication in seconds and provide lightning fast results with relevant data at the click of the mouse. The web paradigm has morphed from being a source of information to being a source of information that divulges it in fractions of seconds. With the web going wireless and finding its way into the diminutive little all in one innovation called the ?next-gen? cell phone, information has wriggled its way through to users desiring it from any corner of the globe and while on the move. Custom Software Development and Graphical User Interface Development have revolutionized the user interactivity experience thus increasing the amount of time that users engage in activities online.
At the crux of the matter is still the fact that data needs to be highly available for users to be consistently interested in regarding the web as their ultimate rapid source of credible information. A web crawler is a novel innovation that helps achieve these goals in a methodical and automated manner. A web crawler is a program that browses the web and is mainly utilized to create a copy of all the visited web-pages for subsequent processing by a search engine that undertakes indexing of the pages to provide faster results in searches. A crawler is also known as an ant, automatic indexer, bot or worm and the process is called web crawling or spidering. Numerous web sites and search engines in particular use spidering for garnering up-to-date data. Maintenance tasks including checking links or validating HTML code on a website can also be automated using crawlers. The web crawler entity is basically a bot or a software agent that starts of visiting URLs from a list called seeds, identifying all the hyperlinks in the page and adding them to the existing list called a crawl frontier. A recursive visit is undertaken by the crawler to these URL?s while adhering to a set of policies.
Custom Software Development and Crawler Development have come a long way towards eliminating possible obstacles in crawling the web such as a large volume of data, rapid rate of change and dynamic page generation. A web crawler, thus, could be the apt answer where automation of web related search tasks and rapid realization of search results is of utmost importance.