What Is Web Crawler?
A Web crawler is an web robot which systematically browses the World Wide Web, for the purpose of Web indexing this process is called web spidering or Web Crawling web crawling also known as web spider.
A Web Crawler Or Web Spider select a web page and automatically create key search word for online users which makes capable online users to find page they are looking for.
Working Of Web Crawler
Web crawlers copy all the pages they visit for later processing by a search engine which indexes the downloaded pages so the users can search much more efficiently, a search engine find your page or file but Before this process it find information on the hundreds of millions of Web pages that exist, a search engine make use of special software robots called spiders.HOT:
How To Fix Crawl Error.
A crawler have a highly optimized architecture and have a good crawling strategy crawler use algorithmic process which determine which sites to crawl, how often, and how many pages to fetch from each site.