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North American Network Operators Group Date Prev | Date Next | Date Index | Thread Index | Author Index | Historical RE: Crawler Ettiquette
Hi, > a) Obey robots.txt files > b) Allow network admins to automatically have their > netblocks exempted on request > c) Allow ISP's caches to sync with it. I don't know if this is already on your list, but I'd also suggest "d) Rate-limiting of requests to a netblock/server". I haven't got any references immediately to hand, but I do seem to recall a crawler written in such a way that it remained "server-friendly" and would not fire off too many requests too quickly. > ISPs who cache would have an advantage if they used the cache > developed by this project to load their tables, but I do not > know if there is an internet-wide WCCP or equivalent out there > or if the improvement is worth the management overhead. It may be worth having a quick look at http://www.ircache.net/ - there is a database of known caches available through a WHOIS interface, amongst other things. HTH, Jonathan
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