Some questions on Asp.Net AJAX cookieless application

We are about to start a big corporate application in Asp.Net 2.0. The
application is a multilingual English - arabic web site. 

Some parts of the application requires AJAX and we are planning to use Asp.Net
AJAX Extensions. Also the application should work using cookieless sessions. 


I have some queries that need to clarify before starting the work, I am googling
to find the answers but if you have the answers or any suggestions please let me
know

 
1. Is there any big performance problem associated with using Asp.Net AJAX
Control toolkit? (i read this helpful article)


2. Is there any issues between Asp.Net AJAX and Asp.Net cookieless session?

3. Is there any problem in using ISAPI url rewrite with Asp.Net AJAX or 
cookieless sessions? 

4. We are planning to use Helicon ISAPI rewrite, please let me know if you have
any other suggestions.


5.  Please suggest a good spell checker. (We have decided to use TinyMCE for
content editing and checking Karamasoft's ultimatespell for spell checker)


 

Best Regards,
Anz

http://www.FlickrMailer.com

3. There is no problem at all using url rewriting and AJAX. However, if the
cookieless sessions work with querystring tokens, you must be careful when
configuring the rewrite rules. If using an mod_rewrite compatible url rewriter,
you can solve this problem by using the option [QSA] which adds the original
querystring to the rewritten url.

4. I recommend IIS mod rewrite for url rewriting. It's rock solid, very
configurable, and it's a serious piece of work. Helicon used to be a well
working tool for years (I would recommend helicon if you asked me one or two
years ago), but recently there are some serious stability reports in their
forum. It seems that they have fixed those issues, but I would be very skeptical
in using it in a production server. IIS mod rewrite is a lot better, but since
opinions and needs vary, make sure you try both.

5. I'm not sure if you need this, but take a look at URL Spell Checker

Hope I helped!

PS I didn't know about Karamasoft's spell checker. It's really interesting...

Thanks a lot for the replies.. Yeah it seems like IIS Mod rewrite is a better
than the other one.


Could you please repost the url for spell checker,, its broken now..

Best Regards
Ansar

1. With Ajax you have less data being sent throu the network becouse, with
update pannels, only the data that is being updated is sent in the Server's
Response. That makes the performance a lot better! And also makes the User
experience better, since there is no Page refresh.

Sorry for that. Here is the correct url for URL Spell Cheker