In the mean time I have found a better solution at the moment is to test on a site that allows users to crawl their site.
On Thu, Jun 1, 2017 at 5:26 PM David Choi <choi.davi...@gmail.com> wrote: > I think you misunderstand the argument was about stealing content. Sorry > but I think you need to read what people write before making bold > statements. > > On Thu, Jun 1, 2017 at 5:20 PM Walter Underwood <wun...@wunderwood.org> > wrote: > >> Let’s not get snarky right away, especially when you are wrong. >> >> Corporations do not generally ignore robots.txt. I worked on a commercial >> web spider for ten years. Occasionally, our customers did need to bypass >> portions of robots.txt. That was usually because of a poorly-maintained web >> server, or because our spider could safely crawl some content that would >> cause problems for other crawlers. >> >> If you want to learn crawling, don’t start by breaking the conventions of >> good web citizenship. Instead, start with sitemap.xml and crawl the >> preferred portions of a site. >> >> https://www.sitemaps.org/index.html <https://www.sitemaps.org/index.html> >> >> If the site blocks you, find a different site to learn on. >> >> I like the looks of “Scrapy”, written in Python. I haven’t used it for >> anything big, but I’d start with that for learning. >> >> https://scrapy.org/ <https://scrapy.org/> >> >> If you want to learn on a site with a lot of content, try ours, chegg.com >> But if your crawler gets out of hand, crawling too fast, we’ll block it. >> Any other site will do the same. >> >> I would not base the crawler directly on Solr. A crawler needs a >> dedicated database to record the URLs visited, errors, duplicates, etc. The >> output of the crawl goes to Solr. That is how we did it with Ultraseek >> (before Solr existed). >> >> wunder >> Walter Underwood >> wun...@wunderwood.org >> http://observer.wunderwood.org/ (my blog) >> >> >> > On Jun 1, 2017, at 3:01 PM, David Choi <choi.davi...@gmail.com> wrote: >> > >> > Oh well I guess its ok if a corporation does it but not someone wanting >> to >> > learn more about the field. I actually have written a crawler before as >> > well as the you know Inverted Index of how solr works but I just thought >> > its architecture was better suited for scaling. >> > >> > On Thu, Jun 1, 2017 at 4:47 PM Dave <hastings.recurs...@gmail.com> >> wrote: >> > >> >> And I mean that in the context of stealing content from sites that >> >> explicitly declare they don't want to be crawled. Robots.txt is to be >> >> followed. >> >> >> >>> On Jun 1, 2017, at 5:31 PM, David Choi <choi.davi...@gmail.com> >> wrote: >> >>> >> >>> Hello, >> >>> >> >>> I was wondering if anyone could guide me on how to crawl the web and >> >>> ignore the robots.txt since I can not index some big sites. Or if >> someone >> >>> could point how to get around it. I read somewhere about a >> >>> protocol.plugin.check.robots >> >>> but that was for nutch. >> >>> >> >>> The way I index is >> >>> bin/post -c gettingstarted https://en.wikipedia.org/ >> >>> >> >>> but I can't index the site I'm guessing because of the robots.txt. >> >>> I can index with >> >>> bin/post -c gettingstarted http://lucene.apache.org/solr >> >>> >> >>> which I am guessing allows it. I was also wondering how to find the >> name >> >> of >> >>> the crawler bin/post uses. >> >> >> >>
