From the webpage german freely translated to english
> Hervorragende Eignung für hoch frequentierte Websites
=>Especially for highly frquented webpages.
I do not think having your cookie beeing part of dns is a fast solution
or did you your self register many of these entrie before you brought
your page up because than i get me a dns server download your
possible cookielist (then it is a download :-) ) and and do a little easy
hacking. You cannot do anything against the that download ...
If you generate them dynamically your pages are slower than can be
and you cannot work against that with more machines.
> Tracking unabhängig von Cookies, IP-Adressen und URL-Kodierung
=>User tracking without using cookies, ip-adresses or url-rewriting
but i typed www.sevenval.de and i got xe7f5b0b802ffd79dd702985633bdb675.sevenval.de
that is one x plus a 32 hex so you use md5?
And of cause you do not use IP adresses if so you could not distinguish
between usesers sitting behind a firewall in an intranet.
Cookie - yes you need not with that solution.
> Domainübergreifendes Tracking
=usertracking over multiple domains
That's whay you need an application server -> for me it seems you only
need sessions spread over mulitple machines behind a firewall. So your
problem is that you are not able to redirect the user request to the server
which holds the session for the user.
Solution for smaller sites with only a few web servers:
Install one web server direct behind the firewall.
This works as load balancer using something like
1) www.x.y/<cookie>?<query> ---(db)---> z.dmz?<query> + <cookie>
2) www.x.y?<cookie>&<query> ---(db)---> z.dmz?<query> + <cookie>
So each server in the dmz handles only his own session requests.
When no session is used direct to on free webserver.
When a new session is generated store session-id+local-ip in db.
The result is that i am using a db instead a dns-server. Questions
a) what is faster?
b) what is recognized by the user?
answer
a) I don't know what is faster internally but my db solution needs less
machine power (Additionally i suppose you have a db also...) and the
db solution is faster externally because it does not produce unnecessary
dns traffic.
b) With the db solution the user does not see that he is directed to another
host.
and hey i did not even change seesion-id generation!
marcus
At 02:29 29.03.2002, Stefan Esser wrote in answer to Egon Schmid:
Hi,
> Have a look at www.sevenval.com. Sorry everything is German. If you
Hmm yeah but if your browser is really not able to do proper content
negotiation, there is still an "english" button in the right lower edge of
the page...
> regocnize what I mean. The generated URLs are patents.
> Please ask Hartmut for more details.
Ask more about what? That this stuff is patented is funny, because it shows
how idiotic the european law is, but thats another story. Anyway I wonder
what Hartmut can tell me about Sevenval that I don't already know :)
Stefan
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