From Field to Table: A Beer’s Journey with Union Pacific

By: Sexy

On: December 31, 2024

Tagged: Airport, Award, Country, Event, Ground, Liquor, Map, Memori, Mountain, Network, Party, Railway, Sky, Space, Station, Subway, Transport, Travel

Have you ever wondered how your favorite beer makes its way to your table?

Watch the journey from the field to your glass with Union Pacific’s reliable rail network. See how we support the supply chain by transporting essential ingredients and final products across the nation.

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Spider

Web crawler, sometimes called a spider or spiderbot and often shortened to crawler, is an Internet bot that systematically browses the World Wide Web and that is typically operated by search engines for the purpose of Web indexing (web spidering).

Web search engines and some other websites use Web crawling or spidering software to update their web content or indices of other sites' web content. Web crawlers copy pages for processing by a search engine, which indexes the downloaded pages so that users can search more efficiently.

Crawlers consume resources on visited systems and often visit sites unprompted. Issues of schedule, load, and "politeness" come into play when large collections of pages are accessed. Mechanisms exist for public sites not wishing to be crawled to make this known to the crawling agent. For example, including a robots.txt file can request bots to index only parts of a website, or nothing at all.

The number of Internet pages is extremely large; even the largest crawlers fall short of making a complete index. For this reason, search engines struggled to give relevant search results in the early years of the World Wide Web, before 2000. Today, relevant results are given almost instantly.

Crawlers can validate hyperlinks and HTML code. They can also be used for web scraping and data-driven programming.