Innovation Award
January 2008
Number 8 |
robots.txt is a file that sites need to have in their domain Web root to tell search engine crawlers and Web robots in general which pages should not be crawled.
This class can parse a robots.txt file of a domain to determine whether a given page should be crawled or not.
It is useful to implement a friendly crawler which respects the wishes of site owners that do not want to have certain pages crawled by Web robot programs.
Manuel Lemos |
This class can be used to check whether a page may be crawled by looking at the robots.txt file of its site.
It takes the URL of a page and retrieves the robots.txt file of the same site.
The class parses the robots.txt file and looks up for the rules defined in that file to see if the site allows crawling the intended page.
The class also stores the time when a page is crawled to check whether next time another page of the same site is being crawled it is honoring the intended crawl delay and request rate limits.
| Ratings | Utility |
Consistency |
Documentation |
Examples |
Tests |
Videos |
Overall |
Rank |
| All time: |
Sufficient (66.7%) |
Sufficient (66.7%) |
Not sure (50.0%) |
- |
- |
- |
Not sure (45.0%) |
1555 |
| Month: |
Not yet rated by the users |
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