Re: Generated pages date

be careful what you suggest to them. they might patent it. :) http://biz.yahoo.com/bw/010423/0014.html (having built my own little bookmark-checker script, i can appreciate how annoying the problem can be. if only last-modified headers were reliable. :) jim On Mon, May 14, 2001 at 07:03:08PM -0400, Stig S?ther Bakken wrote: > Hi, > > You should tell the url-minder people that their page comparison is > broken. There's just too many sites out there that have tiny little > differences on each reload, and there are much better ways than doing > a plain binary compare, or having everyone add custom tags to their > HTML. > > One suggestion is using a partial checksum algorithm: you split the > document into N parts and make a checksum on each part. If at least > N-M checksums are the same, two documents are considered equal. Try > starting off with N=9 and M=1. It can be tuned by adjusting N and M > or splitting the document in different ways (per-byte, per-line or > looking at HTML structure). > > - Stig > > [jhlavon@relaxtime.cz] > > Hi, > > oop, sorry, you don't understood me - problem isn't in words > > "generated/changed" > > but in date value after it. Search robot read every night your page, calculate > > sum, and because you generate for every call new date/time on www-page, it > > thinks that page was changed and in "goodwill" it send me message about change - > > every night about 3 a.m. :(( > > > > Please, generate what date/time what you will, but use tags > > "<url-minder-ignore> > > and </url-minder-ignore>" > > or "<mind-it-ignore> a </mind-it-ignore>". This search robot is very > > good > > service, I will use it also for your webs, alike for ten another ... > > > > Thanks, Jiri > > > > Colin Viebrock wrote: > > > > > Okay, this is done on PHP.net ... hopefully it doesn't break anything, but > > > if it does we'll have to take it out again. > > > > > > Let me know if it works for you. > > > > > > - Colin > > > > > > ----- Original Message ----- > > > From: <jhlavon@relaxtime.cz> > > > To: <webmaster@mysql.com>; <webmaster@php.net> > > > Sent: Friday, May 11, 2001 8:29 AM > > > Subject: Generated pages date > > > > > > > Hi, I am using 3rd-party watching service to watch changes on your > > > www-pages. > > > > Because you have on your pages entry similar of "Page generated: > > > 2001/05/07 > > > > 16:38:54", I receive change-message every day. > > > > > > > > Please, please, include code for generated date in group of tags > > > > > > > > "<url-minder-ignore> and </url-minder-ignore>" > > > > or > > > > "<mind-it-ignore> a </mind-it-ignore>", > > > > > > > > that robots use for this events. > > > > > > > > Thans you very much. > > > > > > > > Best regards > > > > Jiri Hlavon > > > > > > > > -- > Stig S?ther Bakken <ssb@fast.no> > Fast Search & Transfer ASA, Trondheim, Norway