----- Original Message -----
From: "uprooter" <[EMAIL PROTECTED]>
To: <users@tomcat.apache.org>
Sent: Monday, October 06, 2008 6:48 PM
Subject: Re: Using tomcat to hold many open connections.
Thanks johnny.
Will TC can survive 20k polling clients ?
How much pipe do you have?
How "real time" do you want it?
Are you images displayed on google earth, or just 1 byte that represent on
or off?
This is the design you have to do, this is the engineering you have to do...
that will tell you how much pipe you need, TC is very likely not the
restiriction, and if it was, you would use more than one.
Clients only poll for a specific item, if they open, if the user is on that
view, and that in itself is no the issue normally... its a small question...
.... have you got data for me? ... a few bytes... but then if you deliver
google earth... thats the issue and there are other technologies here like
ETAGS as work... ie if data has not changed... nothing is sent.
Thats the way it is... you are never going to be able to push to a client on
a dail up for example... its the only way.
Server watches the machines close to perfect real time.... the web gets that
as fast as the web allows... just think about your browser displaying
video... theres a pragmatic limits, and thats what makes one solution well
engineered and another a blindly applied technology, thats a disaster... you
can make it good or you can make a terrible solution....
Can you calculate the byte traffic?... that will tell you which way to go ;)
You got to engineer it... and becareful of all the IT spam out there, make
sure you understand it...
Good Luck...
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