March 2012
Beginner
713 pages
24h 48m
English
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Algorithm-Based Ranking Systems: Crawling, Indexing, and Ranking
Understanding how crawling, indexing, and ranking works is helpful to SEO practitioners, as it helps them determine what actions to take to meet their goals. This section primarily covers the way Google and Bing operate, and does not necessarily apply to other search engines that are popular, such as Yandex (Russia), Baidu (China), Seznam (Czechoslovakia), and Naver (Korea).
The search engines must execute multiple tasks very well to provide relevant search results. Put simplistically, you can think of these as:
Crawling and indexing billions of documents (pages and files) on the Web (note that they ignore pages that they consider to be “insignificant,” perhaps because they are perceived as adding no new value or are not referenced at all on the Web)
Responding to user queries by providing lists of relevant pages
In this section, we’ll walk through the basics of these functions from a nontechnical perspective. This section will start by discussing how search engines find and discover content.
Crawling and Indexing
To offer the best possible results, search engines must attempt to discover all the public pages on the World Wide Web and then present the ones that best match up with the user’s search query. The first step in this process is crawling the Web. The search engines start with a seed set of sites that are known to be very high quality sites, and then visit the links on each page of those sites to discover other web ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.