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. > >> > >
