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Google makes inferences about URL paramters



العربيه

Author Message
GoogleGuy Says







PostPosted: October 12, 2003 6:13 PM 

Importance: High

In this description of session ids, Google mentions at the end that Google sometimes makes inferences about the URL paramters. This makes sense, but I don't recall GG ever mentioning anything like this before.

GoogleGuy Says: [Link to quote]

Hey bluecorr! Often as a user surfs or shops on a site, the site owner wants to track what pages they've seen, or stuff like what products are in their shopping cart. A session-id lets a site owner give each user a unique identifier. That identifier can reference customer data like the shopping cart contents stored in a database, for example.
Some people would mention that you could use a cookie to do the same thing and keep the urls much cleaner. That's true, but not every user has cookies enabled. Using session-id's is one way to try to guarantee that you know that state of a user, even if they don't allow cookies, for example.

So what's the problem with a session id, and why doesn't Googlebot crawl them? Well, we don't just have one machine for crawling. Instead, there are lots of bot machines fetching pages in parallel. For a really large site, it's easily possible to have many different machines at Google fetch a page from that site. The problem is that the web server would serve up a different session-id to each machine! That means that you'd get the exact same page multiple times--only the url would be different. It's things like that which keep some search engines from crawling dynamic pages, and especially pages with session-ids.

Google can do some smart stuff looking for duplicates, and sometimes inferring about the url parameters, but in general it's best to play it safe and avoid session-ids whenever you can. Hope it makes sense!

best wishes,
GoogleGuy


Steff

Posts: 3

Reply: 1



PostPosted: September 4, 2004 9:39 AM 

why does not Google provide a meta feature for that problem like remove-url-parameter?

we have to use many kinds of identifier e.g. to load content from database...

Google has indexed more than 4000 sites from our webpage, but the webpage only have about 500. isn't it a good idea if google checks for unwanted url parameters to avoid page duplications. it would even save space and performance for both.

many systems uses url parameters for identifications. i think it's the best if google (also other searchengines) provides a way to eliminate unwanted url parameters in the indexed location for a page. its not so easy for application developers to change the handling of parameters.

Steff

Posts: 3

Reply: 2



PostPosted: September 4, 2004 9:39 AM 

why does not Google provide a meta feature for that problem like remove-url-parameter?

we have to use many kinds of identifier e.g. to load content from database...

Google has indexed more than 4000 sites from our webpage, but the webpage only have about 500. isn't it a good idea if google checks for unwanted url parameters to avoid page duplications. it would even save space and performance for both.

many systems uses url parameters for identifications. i think it's the best if google (also other searchengines) provides a way to eliminate unwanted url parameters in the indexed location for a page. its not so easy for application developers to change the handling of parameters.

Steff

Posts: 3

Reply: 3



PostPosted: September 4, 2004 9:40 AM 

why does not Google provide a meta feature for that problem like remove-url-parameter?

we have to use many kinds of identifier e.g. to load content from database...

Google has indexed more than 4000 sites from our webpage, but the webpage only have about 500. isn't it a good idea if google checks for unwanted url parameters to avoid page duplications. it would even save space and performance for both.

many systems uses url parameters for identifications. i think it's the best if google (also other searchengines) provides a way to eliminate unwanted url parameters in the indexed location for a page. its not so easy for application developers to change the handling of parameters. :confused:


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