The session DOES expire, but transparently to the system. FOr purposes of this site, a session is expired if its lastAccess variable is older than 20 minutes ago. Basically I'm doing a check in the application.cfm file to see if this is the case, and if it is, then it deletes a couple of client variables, and redirects the user to the login page.
Kevin Langevin Flying Chimp Media 954-585-0999 [EMAIL PROTECTED] http://www.FlyingChimp.com > -----Original Message----- > From: Dimple Goshar [mailto:[EMAIL PROTECTED]] > Sent: Tuesday, April 23, 2002 6:17 AM > To: CF-Talk > Subject: RE: Keeping track of logged-in users... > > > You can also update the database and set the flag if the user closes the > browser window without logging out properly > > Also if u r using client variables instead of session variables , then the > session will not expire in this case, so these problems wont arise > > > -----Original Message----- > > From: nagraj [SMTP:[EMAIL PROTECTED]] > > Sent: Tuesday, April 23, 2002 3:47 PM > > To: CF-Talk > > Subject: Re: Keeping track of logged-in users... > > > > Hello, > > > > But If User Leave the system or Session Expires.The database is not > > updated > > from flag=1 to flag=0.This may lead to problems.I think you can > preserver > > LastLogin time.i.e. When ever user log in we keep the User login > > information > > in db.If we > > are known with session time out peroid we can use that > information to find > > out logged users. > > > > If you can you can store the Information in Application variable a > > structure.But It has its own drawbacks. > > > > But Still you can give a try to one of the above. > > > > With Regards > > Nagaraj.A > > > > ----- Original Message ----- > > From: "Dimple Goshar" <[EMAIL PROTECTED]> > > To: "CF-Talk" <[EMAIL PROTECTED]> > > Sent: Tuesday, April 23, 2002 3:05 PM > > Subject: RE: Keeping track of logged-in users... > > > > > > > Hi, > > > > > > If you want to avoid updates to your database, you can have another > > > column in your users database , "loggedon" which is set to > > > 1 when the user logs on to the site and set to 0 when the user logs > > > off > > > > > > Then u can give ur report on the basis of this column > > > > > > > > > Regards > > > Dimple > > > > > > > -----Original Message----- > > > > From: Kevin Langevin [SMTP:[EMAIL PROTECTED]] > > > > Sent: Tuesday, April 23, 2002 2:42 PM > > > > To: CF-Talk > > > > Subject: Keeping track of logged-in users... > > > > > > > > Hi all- Got a "best practices" question for you. > > > > > > > > I've got a client site which uses client variables to track users' > > > > sessions > > > > for auto-logout. When a user logs on, a CLIENT.lastAccess > variable is > > set > > > > to now(). In the application.cfm, a check is run to see if > > > > CLIENT.lastAccess is defined and if it's more recent than > 20 minutes. > > If > > > > it > > > > is, then CLIENT.lastAccess is set to now() again, and processing > > > > continues. > > > > As long as the client hits a page before the 20 minute time > limit runs > > > > out, > > > > works great. To log the user out, I delete certain client > variables, > > > > especially lastAccess. > > > > > > > > Now my dimlemma. The client decided that he wants to track how many > > users > > > > are "logged on" (how many have accessed a page in the last > 20 minutes > > and > > > > haven't yet been logged off. > > > > > > > > The only way I can see to do this is to ALSO write now() into a > > lastAccess > > > > field in the member database on each hit right after writing the > > client > > > > variable, so that the home page, which is supposed to display the > > number > > > > of > > > > users logged in, can run a query on members with a lastAccess field > > with > > a > > > > time less than 20 minutes ago. This just seems like a lot of DB > > access > > > > (one > > > > write when setting the CLIENT variable, and another when > updating the > > > > member > > > > table), but I'm wondering if anyone has experience doing something > > like > > > > this, and whether that one extra update on each page hit will hurt > > that > > > > much. Assume a few thousand members hitting the site daily, spread > > out, > > > > most likely, but probably surfing around a fair bit (lots > of articles, > > and > > > > a > > > > message board). Doing the CLIENT variable update seems to > impact the > > site > > > > not at all, but I've not tested under really heavy load. > > > > > > > > Does anyone have a more elegant way of doing this, like parsing the > > Client > > > > DB for the CLIENT.lastAccess variable and getting a count > of the ones > > with > > > > a > > > > value less than 20 minutes ago. Any suggestions would be most > > > > appreciated. > > > > > > > > Thanks... > > > > > > > > Kevin Langevin > > > > Flying Chimp Media > > > > 954-585-0999 > > > > [EMAIL PROTECTED] > > > > http://www.FlyingChimp.com > > > > > > > > > -----Original Message----- > > > > > From: Neil Clark - =TMM= [mailto:[EMAIL PROTECTED]] > > > > > Sent: Tuesday, April 23, 2002 4:51 AM > > > > > To: CF-Talk > > > > > Subject: RE: CF's Most Wanted :: > > > > > > > > > > > > > > > Hi Peoples > > > > > > > > > > Well, I can say, since its public knowledge in some circles that > > locking > > > > > will no longer be required with Neo - the server will handle this > > side > > > > > of things. CFMX has addressed the fact that failure to > lock shared > > > > > scope vairables will not cause memory corruption while a write > > operation > > > > > is in progress. > > > > > > > > > > **However**, you will still have to lock for the > legitimate use - to > > > > > prevent synchronous activity ensuring that requests are > requests are > > > > > processed one at a time. For example, if I am about to reread a > > cached > > > > > query I might decide that all requests that need this query should > > wait > > > > > so as to ensure that they have the newer data. > > > > > > > > > > Hope this helps! > > > > > > > > > > > > > > > > > > > > > > > > > > > > > > Neil > > > > > Team Macromedia > > > > > http://www.macromedia.com/go/team > > > > > > > > > > > > > > > > > > > > > > > > > ______________________________________________________________________ Structure your ColdFusion code with Fusebox. 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