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how to allow crawlers to crawl  a website only on specific days

Posted on 2013-02-06
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Last Modified: 2013-02-15
i want to allow crawlers to crawl my website at specific days of  the week e.g. over the weekend when there is not much traffic on the website. i m using IIS 6.0 for hosting on windows 2003 platform.
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Question by:mmalik15
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Expert Comment

by:Chris Stanyon
ID: 38859060
If a crawler is slowing your site down that much, then change hosting providers. A crawler is effectively one visitor, and will have zero impact on your sites performance, but limiting the crawlers access will have significant impact on your Search Engine rankings.

If you explain why you want this, there may be a better solution to your problem.
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by:mmalik15
ID: 38859071
thanks for the comment. Too many crawlers are slowing down the site and CPU is always around 100% in use and the site keeps going down. since I have set the User-agent: * Disallow: / in my robots.txt the cpu use is fine and the site is fine. But i do want the site to be crawled.
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Chris Stanyon earned 2000 total points
ID: 38859118
I would guess there's another problem with your site then, because there's no way crawlers should grind your site to a halt (otherwise the whole internet would freeze!).

Have a proper look through your access logs and see how many crawlers are hitting your site, and how often. If it's a particularly bad crawler, then you may be able to prevent it from accessing your site using a robots.txt. Are you sure your site doesn't grind to halt when a number of normal users access it.

You can also control some aspects of the GoogleBot by accessing your Google WebMaster account.
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