> Hi Folks, i'm prepping for the cf exam and i'm lacking a good understanding > of the difference between client and session variables. It seems that they > both are capable of doing the same thing. When and why should/would i use > one or the other? What apps have you used client vars for and not session > vars for and visa versa and why? Thanks for any help.
As I understand it, the key difference is that session variables timeout. Client variables are tied to a specific client, session variables are tied to a specific client *and last for a specific period of time after the last request from that client to a specific application*. This timeout period is controlled in CF Admin, or in the CFAPPLICATION tag in application.cfm. I use session variables mostly for password-protected areas (usually backend CMS's) that need the finite login time for security reasons. I never really used client variables. I suppose I could provide the option to "remember me next time" when users login, and this is a good example of the difference I suppose: - Normal login = session variables, and if you leave the app for 20 mins (or whatever), you will have to login again. - "Remember me" login = client variables, and as long as the connected cookies remain on the client, you won't have to login to get into the app. hth, - Gyrus ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Structure your ColdFusion code with Fusebox. Get the official book at http://www.fusionauthority.com/bkinfo.cfm FAQ: http://www.thenetprofits.co.uk/coldfusion/faq Archives: http://www.mail-archive.com/[email protected]/ Unsubscribe: http://www.houseoffusion.com/index.cfm?sidebar=lists
