Web Crawlers – How Search Engines Work
The search engines are ultimately responsible for bringing your website to the attention of potential customers. As a result, it is preferable to understand how these search engines function and how they present information to the customer initiating a search.
Search engines are classified into two types. The first is by crawler or spider robots.
Spiders are used by search engines to index websites. The search engine spider will index your entire site if you submit your website pages to them by completing their required submission page. A’spider’ is a program that is run automatically by the search engine system. Spider visits a website, reads the content, the Meta tags, and follows the links that the website connects. The spider then returns all of that data to a central depository, where it is indexed. It will go through each link on your website and index those sites as well. Some spiders will only index a certain number of pages on your site, so don’t build a 500-page website!
The spider will return to the sites on a regular basis to check for any new information. The frequency with which this occurs is determined by the search engine’s moderators.
READ MORE: Choosing the Best Fashion Design Schools from the Rest
A spider is similar to a book in that it contains the table of contents, the actual content, and links and references for all the websites it discovers during its search, and it can index up to a million pages per day.
Excite, Lycos, AltaVista, and Google are some examples.
When you ask a search engine to find information, it actually searches through the index it has created rather than the Web. Because not all search engines use the same algorithm to search the indices, different search engines produce different rankings.
A search engine algorithm scans a web page for the frequency and location of keywords, but it can also detect artificial keyword stuffing or spamdexing. The algorithms then examine how pages link to other pages on the Internet. An engine can determine what a page is about by looking at how pages link to each other and if the keywords on the linked pages are similar to the keywords on the original page.
