How Do Search Engines Work

Google is in Glassdoor’s annual list of the 50 best places to work, as well as Fortune magazine’s annual list of the 100 best companies for whom to work multiple times over the year.

What is search engine

 

The search engine consists of a database of information, and algorithms that return the relevant results and helps to rank for a given query. Google search engine is a collection of web pages and algorithms that look at the various factors to deliver the most relevant results.

Search engine algorithms

 

A search engine algorithm is a way to rank the matching results when a user performs a search. Each search engine has different and unique algorithms for ranking the webpages.

Working on search engines

 

The first search engine makes a list of known URLs, which then go to the scheduler. The scheduler crawls each URL, then crawled pages go to the parser where the relevant information is extracted and indexed. Parsd links go to the scheduler, which prioritizes their crawling and re-crawling. When the user searches for any query, the search engine provides matching pages and ranks by the algorithms according to relevancy.

Scheduling

The scheduler assesses the new and known URLs according to the relative importance. Then it decides when to crawl new URLs and recrawl known URLs.

Crawling

A crawler is a software that crawls the web pages. Search engines search the new content by recrawling known pages and crawl the newly added links. After crawling the pages send to the parser. Many people believe that crawling includes following links from page to page, but it is not true.

Parsing

The main working of the parser is to extract links from the web pages, along with other important information and then sends back to the scheduler and also extracts the data for indexing.

Indexing

The search index means adding the crawled web pages to a database. It is a digital library of information on webpages.

 

If you know how Google finds and ranks content improves your ability to create pages that show up in the search results. If you don’t have any knowledge about what Google values, or even how they discover content, your chances of ranking are low.

 

SEO is a priority for lots of businesses because:

  • SEO helps in increasing free traffic
  • Traffic will increase month after month if you make efforts in maintaining your rankings
  • It helps to reach the targeted audience.

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