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Crawler Ettiquette

  • From: Deepak Jain
  • Date: Wed Jan 23 14:37:55 2002


I figured this was the best forum to post this, if anyone has suggestions
where this might be better placed, please let me know.

A University in our customer base has received funding to start a reasonably
large spider project. It will crawl websites [search engine fashion] and
save certain parts of the information it receives. This information will be
made available to research institutions and other concerns.

    We have been asked for recommendations on what functions/procedures they
can
put in to be good netizens and not cause undo stress to networks out there.
On the list of functions:

	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.

	There are others, but they all revolve around a & b. C was something that
seemed like a good idea, but I don't know if there is any real demand for
it.

	Essentially, this project will have at least 1Gb/s of inbound bandwidth.
Average usage is expected to be around 500mb/s for the first several months.
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.

	Because the funding is there, this project is essentially a certainty. If
there are suggestions that should be added or concerns that this raises,
please let me know [privately is fine].

All input is appreciated,

DJ





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